Dashing Thru the Smoke

After returning Hapy to service, I have not driven him much. As has been true for most of the time we have been together, he doesn't have heat. So it's like driving in an ice fishing shed... which probably brings some appeal to some folks, but it's not my favorite. Still, if I had to get somewhere and I could get there without using freeways, I would and have drive(n) Hapy. Why not freeways? This time of year, as I am sure you have noticed, drivers are especially distracted and others are driving specially, uh... nasty. This old bus needs more braking space than modern cars but other drivers don't always recognize that. When you add those factors together, it is tough sledding in the bus. Add in wet or slick roads and it gets scary. Regular roads are bad enough, but freeway speeds are too scary in the winter for me and the bus. With this backdrop, I start today's post.

Smoked Again

can you spot the loose wire?

A few years ago, on the return drive from 4Peaks, we were greeted with smoke billowing out from under the dash (See 4Peaks 2018 - Road Report). Somehow the ignition sub-harness had fried, leaving us stranded, riding home on a flatbed again. There's a song lyric in there somewhere. Anyway, I fixed that once and then again in a not-to-my-best-liking way with now 2 keys to operate the bus: one to unlock the steering and one to start/run the engine. This is working well enough so I leave it alone.

The other night, I had to drive out to Hillsboro for a final recording session with the band I'm playing in (shameless plug: Sunkicks), and Boo had not returned from work. So, I pressed Hapy into service. With the new starter and better glow-plugs, he fired right up and hummed like he was ready for some fun. It was damp out, so the lack of heat meant drying the inside of the windscreen with a towel, but for the ride out, it only needed that one wipe down. Even the driver door closed without too much trouble. It was like Hapy was really trying his best to show he was a real car and could be used reliably. We stopped for some home repair parts at the big box home repair store and he started right up afterwards. Again, "I'm a real car".

After the recording session concluded, the temperature had continued to drop, while the moisture held steady so the interior glass was quite foggy. Hapy fired right up and I flipped on the running lights while I refamiliarized myself with the controls in the dark. I thought I had the switch for the fans in my hand, but it was actually the headlight control... I turned hard it to the right (the fan control switch has always been a little resistant), and rather than turn on the fans, I caused something to ground, causing a wire to release it's smoke. When I saw the smoke, I turned the switch back left (anti-clockwise) but the damage had been done. All that was left was to figure out how widespread it was, and to apologize to Hapy; this wasn't his fault, it was all mine. The smoke was pretty bad though, considering the windows were closed, the bus wasn't moving and the fan wasn't on. The next day, my throat was still sore from it. When I opened the driver window, it must have looked like a scene from Fast Times at Ridgemont High with the billowing smoke rolling out.

dripping blue

Starting with the positive... the engine was still running. The cooling fans were on and could be turned on and off. The defogger (doesn't defrost, hardly de-fogs) fan could be turned on and off. As to the negative, the driving lights were out, I think the tail lights were out and there was an annoying buzzer like a seatbelt warning was on. When I flipped the turn signal or hazards, the front lights flashed correctly and the buzzing went away. I was still sitting, idling in front of my bandmate's house, so I decided that I would just drive home and deal with it later.

The drive home was quite uneventful other than the constant buzz noise and concern that drivers behind me could not see us nor tell when we were braking. When I got home, the engine and fans shut off without issue. It was too late and too dark to diagnose, but my hunch was that it's the wire that sends a signal to the running lights.

Wire Still a Puzzler

A few days later, when I could go out to the bus in daylight, I went out and removed the headlight switch from the dash. I could see one of the wires had become detached, but I was unable to see any truly fried wires. Puzzled, I plugged the wire into the open pin on the back of the switch, and tried the lights. Yep, headlights still turn on, dash lights still turn on.... running lights turn on. All of them, including the tail lights. So, I pulled on the hazard switch. Dash directionals flash, front directionals flash, rear directionals flash. At this point, I don't know what's fried, but the engine starts and runs, the cooling fans fire, the dash lights, switches and gauges work and all the lights work. In the middle picture, just above, there's a light blue orb thing on the lower left side of the image. That is a blue drip that I cannot account for, but I think something melted and that's the result. Neat.

I think it is time for me to determine which of the original circuits no longer need to be served and at the very least remove the fuses. After the cleanup I did in the back for running the engine, I think it would be wise to plan to do something very similar up front. I mean, in the end, the only things the "main" fuse box is running now are the dash, and the lights. That's like, 4 fuses tops? Regardless, this exercise should lead me to the smoked wire and reduce the electrical gremlins.

Furnace Update

furnace control board

Our electrician is semi-retired. He used to run a HVAC company and has installed literally hundreds of furnaces before focusing on general residential electrical instead. Now, as he is slowly divesting of his electrical business, he has observed my work on our furnace. In a fit of holiday fever (he swore off furnace work years ago), he popped by for a couple of hours, got the gas line hooked up and leak tested as well as the 110V electrical feed completed, with a worker shut-off switch. He even got most of the exhaust venting put in. He hit a wall when he was unable to connect the control cable because the access screws are hidden behind a panel that you can't get to once the first piece of exhaust venting is attached to the furnace. That's some poor design.

Still, I saw the furnace project as 7 big individual efforts: demo/move/mount, conditioned air distribution, cold air return, gas, electric, exhaust vent and the thermostat/control cable. I had completed the first 2. He knocked down 2 more (gas and electric) and set me up to get the next 2: thermostat control and exhaust vent. Once I have that done, he will confirm things, and test the system. Then, I just need to get the cold air to pull from inside the house and we have a complete system. For testing purposes, I may simply smack a filter on the plenum.

Since I started this thread, I caught a cold, celebrated Christmas and installed the thermostat control cable. As I indicated, I had to remove the exhaust venting all the way to the firebox before I could remove the panel which covers the control board. I ran a new wire from beneath the furnace (where the old one entered) and connected the control wires. Before putting everything back together, I took the opportunity to spray the snot out of the control board with a can of computer-cleaning compressed air. I figured that panel won't be coming off anytime soon, so may as well get the board as clean as I can. After that, it was simple replacing that which was removed, re-using the same fasteners.

That's about where things are today. Hapy appears operational, and I will be test driving him here in the next couple of days. The furnace is almost ready to test. I need to complete the assembly of the exhaust vent and properly suspend it from the floor to retain the correct exit angle, but I think that is a couple of hours effort at most.

Thanks as always, for following along. Have a peaceful, pleasant, hapy new year-

Enter the Headbanger (Part 3)

I thought I had gotten as far on the headbanger as I intended to for this camping season.... but, today, I wrap this puppy up. Pretty much. I designed, assembled and wired it in Part 1. In Part 2, I figured out how to mount it into the bus, filled in all the gaps with cardboard and applied trunk carpet everywhere a headliner would not be. And, of course, there was more wiring. Today, we complete the headbanger enough for use while we consider how and if it could be improved.

Before I begin, for my US readers, Hapy Flag Day. Earlier this year, I mentioned Phil and Phrends touring through the PacNW. We did that run, and I'll post on that adventure here shortly. But first, the completion-ish of the headbanger.

Headlining the Headbanger

The next logical step was applying headliner to the parts of the headbanger that were still exposed cardboard and OSB. I had a section of material that had been cut off the start of the roll that was about 2 feet deep (56" wide). I needed 19 inches. With the extra material, I was able to get the lines in the headliner to align with the bottom straight edge of the headbanger. I set the cabinet upside down on the tool cabinet with the rear edge facing me. I flopped the material over the speaker boxes and set the lines parallel with the rear edge. I rolled the material back on itself and applied contact cement to the OSB (2 coats) and then a light brushing on the headliner backside. I set the edge and flattened it with my hands. Once set, I rotated the cabinet 180* so the just-cemented part was facing away from me. I worked my way towards me, applying generous amounts of contact cement from side to side in about 6" wide swathes. I double-coated the cabinet, while single-coating the headliner. At each step, I smoothed the headliner down so there were minimal wrinkles and pulls.

With the main section covered, I considered the sides. I had enough material so I didn't need to cut completely separate pieces, but I would need a seam. I decided to make a long seam along the angled section rather than a short seam along the flat bottom at the rear. I did this for 2 reasons. First, the lines of the headliner run straight up-and-down like this, and they would have been running at an odd angle had I just folded along that edge. Second, I was having a hard time visualizing where to make the cut along that shorter edge. I made the fold, applied the headliner with contact cement and then cut off the extra floppy bit. In the end, I am not thrilled with the seam and will look for ideas for how to cover it with something visually inobtrusive. From a distance, it looks fine, I suppose.

All wrapped with headliner, I needed to remove the section in the middle. This cut was not my finest work, and after the less than perfect seams along the outer edge, these cuts further confirmed the need for something to clean-up the transition from trunk carpet to headliner. a small plastic 90* strip might work. Anyway, last, I cut the holes for the speakers and then poked holes through the headliner from inside the speaker boxes for the speaker mounting screws.

Install

I had hoped to have the headliner on the rear ceiling before installing the headbanger, but it's not in and I want to get Hapy on the road. So, I jumped to the install, and ultimately, this was a good thing. My method for raising the cabinet for install is unorthodox, but it worked. I set a plastic recycling tub onto the rear bed cushion. Onto that, I stacked the top and bottom cushions for the rock-n-roll bed. This wobbly stack sets the cabinet in the perfect spot to send through the rear bolts. These are all M4 bolts with lock washers and plain washers. These line up perfectly. Added to the left-center bolt are the grounding ring terminals for the USB chargers. I sent the bolts through enough to loosely hold the rear of the cabinet in place. While I could still reach them, I plugged in the speaker and the USB wires. Then I moved around to the front.

Up front, I discovered that the outer mounts were not going to work. The passenger side mount had the riv-nut in the wrong place (just barely, but wrong). The driver side mount riv-nut did not set, falling out as I tried to thread into it. I discovered that the location was too roundy for a riv-nut to really grab on after trying to set another riv-nut and failing. I know, I posted that I checked the alignment in part 2. I did, but checking the alignment and actually installing are 2 different things, and they are apparently different enough to matter. Lesson learned. So, the front is now held in place with 2 M4 bolts instead of 4. These were sent up the center, around the leading edge "gap filler". Now that it is all together and in place, that center gap fill probably could have been eliminated. As it is, it is very close to the rear light fixture. I may remove it in a later version, but it really does finish off that top edge, and it does pull the 2 speaker box sides together. As to the front edge mounts, I may send through a couple self-tapping sheet metal screws to help hold the cabinet up. It pains me to think that way, though, and as of right now, the cabinet it holding firm to the ceiling.

Once I had the front bolts torqued down, I torqued down the rear ones, and made sure the cables were tucked up out of the way. Satisfied, I pulled the rock-n-roll bed cushions and the recycling tub down. You can see the cushions through the rear window in the picture below.

Speaker Install

Installing speakers is not exactly new ground to cover. The only thing that made this interesting was that I was doing it upside down. Quick side-bar, though... I was able to get in and out the rear tail gate much easier than I expected to. In fact, it is easier to get in/out that way now, than it was 10+ years ago when the original 1972 Westfalia shelf was in there. Figure that I am not getting more nimble; this much smaller unit, and, with the angled front (front is front), it is not nearly as intrusive as the old shelf. I was able to sit upright on the bed (no rock-n-roll parts yet). I would wager that if I sat up suddenly in the middle of the night from a dead sleep, I would not slam my head against the underside of this cabinet. More and more winning.

Anyway, about the speaker install: One speaker at a time, I stuffed poly-fill into the speaker boxes... well, I stuffed poly-fill into the sides and corners of the speaker-boxes. Putting it anywhere else, it would have just fallen out. Then, I wired up the speaker and held it in place (with the cover) and screwed it into the headbanger. Repeat for the second side. Once wired up, I flipped the switch to turn them on and shazam, we have more sound blowing. Anxious to try it out, I closed all the doors, hopped into the driver seat and cranked up whatever was playing on the hard rock station at the time (Cowboy by Kid Rock). Wow. So much sound. After Kid Rock finished, Pink Floyd's "Dark Side of the Moon" started, giving me a sense of the system's fuller dynamics. This is gonna be fun.

Well, that's it for now. I will probably revisit the headbanger when I lower it to put the headliner on the rear ceiling. We are going to drive around like this for a while, though, to see whether we really need or want to change anything. Right now, it seems pretty great.

Thanks, as always, for following along-

Enter the Headbanger (Part 2)

The effort to design and build a custom headbanger cabinet took a while. And, there is a ton of detail, so I split this into multiple posts. Ultimately, this took me a few weeks of sporadic, and sometimes dedicated time, to do. At this point, I have the cabinet structure built, the speaker boxes attached and the speaker wire in place. So today, we solve for the mounting, finish the shaping, add trunk carpet and finish the electrical bits.

Plan to Mount

gap-filling

Prior to the assembly I described in Part 1, I rough-looked at a mounting plan. I took the cobbled-together OSB almost-a-cabinet out to the bus to consider how I could attach it. The cabinet was mostly stable, but I felt that adding the speaker boxes and other bits would help me plan for the mounting brackets. I couldn't be sure what I could reach or could not reach without actually having the speakers in, the shelf in, etc. With a considerably heavier cabinet, I headed out to the rear end of the bus. When I held a single speaker box in place, I used a rubber strap to hold it against the torsion spring for the rear hatch. That would not work this time. Instead, I stacked cushions and whatever I could lay hands on underneath it to wedge the cabinet up against the ceiling. It looked ridiculous and I regret not having taken a picture of the wobbly stand it was on, but I could think about where to place the brackets without a balancing act or having the cabinet shift side to side or front to back as I considered different angles.

I discovered that my initial measurements were slightly off for the inner supports, and I had to remove about 1/2" of the front-most 3 inches (front to back) off the top of the top-most edge of the 2 inner supports to snug-in against the ceiling. In the picture on the right, you can make out a small cut-away just above the chairback in the background. After some quick adjustments with a hand saw, I could return the head banger to the bus for fitment.

 

filling in gaps with cardboard

The cabinet is not terribly heavy, and even with the speakers installed, I don't think it will be more than, say, 20 pounds. While it is not a big deal overall-weight-wise, it is very front-heavy, and I think that will matter. Figure, the speaker boxes and the speakers are most of the weight and that weight is all front-of-center. So, the rear mounts will provide stability, but the front mounts will be carrying the weight. This is especially obvious in the picture on the right, here, where I have a roll of tape wedged under the passenger-side speaker box so it will sit flat on a table. I decided that I would put a bracket on all 4 supports up front. On the outer supports, the bracket will point out and on the inner supports, the bracket will point in. Any other orientation would have been unreachable because of the speaker-boxes. Either in the interest of consistency or overkill, I decided I would put 4 on the rear as well, but with the installs reversed: outer brackets facing inward and inner brackets facing outward. This was necessary to account for the added shelf running all the way back to the rear edge of the inner supports, effectively blocking my access to a mount point above in the rear.

 

I marked on the ceiling and on the cabinet where the brackets should go, and then took the cabinet back into the garage where I installed 1" angle brackets with wood screws. I returned to the bus with the brackets mounted and re-checked the spots in the ceiling where the holes needed to be bored in, marking them clearly with a sharpie. Continuing my avoidance of sheet metal screws, I bored the holes out for and then installed M4 riv-nuts. I confirmed the will-be-cabinet mounts aligned with the riv-nuts and then removed it so I could complete the cabinet. 

One More Thing

cardboard rear-support

While I was working on the ceiling, I prepared the install of the rear dome light between the 2 speakers. I had run the power leads earlier, and I was already there, with a drill. I laid down on my back, and considered where we would be lying down reading a book. Based on where a book would naturally rest in my lap, with my head propped up on a pillow, I figured where the light position should be, and marked it on the ceiling. I measured off of that to set the holes for the fixture, with the switches facing forward. I bored the holes and set 2 more M3 riv-nuts in place so the light fixture will mount with bolts, not screws. Again, that riv-nut tool kit is becoming one of my favorite new acquisitions.

Fill-in The Front

Once I had positioned and installed the speaker boxes, there remained a large gap between the top edge of the speaker box and the leading edge of the headbanger. I filled in this space with carefully cut firm cardboard that I then carpenter-glued into place. These stretches of cardboard will only serve as a backing for the headliner, but they are firm enough to hold in place. Since they are far out of the way, I think that once the cabinet is installed, the headliner and the underlying cardboard will go untouched for years. This pictures along the right side show the fill-in efforts, and how I created some support-from-behind with additional cardboard bits. I taped the seams as well, so the headliner lays down smoothly. After the glue set-up, I tested the relative strength of the cardboard bits by pressing on them with my fingers. They held firm enough that I figured they will hold up.

Final Assembly: Trunk Carpet

USB panel and ports

I was approaching the home-stretch, or at least it felt that way. It was final assembly time, and that includes final surfaces. I chose to use 2 different fabrics. For the areas where hands will touch regularly, like on the face where the USB chargers are and the shelf, I am using trunk carpet. I figure it will show a dirty finger less than headliner material would, and it is designed to withstand some friction. For all of the other surfaces (outer-facing sides, over the speaker boxes, the very bottom) will get headliner. They both apply with stinky DAP contact cement (or spray adhesive). I brushed both the trunk carpet and the target underlayment, wait a few seconds for the DAP to get tacky and set it. You only get one shot, so measure and plan carefully. I chose to use many small pieces, in contrast to the single complicated piece I used on Oliver's sub-box. To create some time to fiddle the pieces around, I used carpenters glue on the larger faces of the trunk carpet. It does not set up as fast, so you can wiggle the carpet into the exact right spot. Then, I did the outer 1/2" edges with the contact cement.

 

fun with wiring

Before carpeting the USB face, I installed the face to the cabinet with a staple gun and tapped the staples home with a framing hammer. To make sure everything stayed put, I edged the panel with carpenters glue. Once well-fixed, some trunk carpet went on. I cut out the holes for the USB chargers and the speaker switch with a razor blade and then installed them too. Before I repeated the install process with the shelf, I applied trunk carpet behind the USB face on the floor around the rear edge to finish the look. I also applied trunk carpet to the floor area behind the speaker boxes, around the inner supports and on the rear-facing side of the outer supports. I did not address the rear of the USB panel, so in that large black sea, there is this large white rectangle. Yuk. I'm not sure if there will be an easy way to get in there and "black" it. My goal was anywhere that could be seen or touched inside the bottom-most shelf from the rear hatch got trunk carpet. The result would be a view from the rear will be completely blacked out, and any use of the rear-facing shelf has dirty-finger protecting trunk carpet. That center section is virtually unusable from the rear so I may make a block-off insert to keep the look clean, and the wires from getting disturbed. The plate will wait. 

Final Assembly: Wiring

At this point, I wanted to finish the wire routing, so the rear-facing area was as tidy as I could manage. I ran the power and ground wires for the USB chargers out through the hole I had bored for the left (front is front) speaker wires, and routed them up the outside of that inner support, setting them immobile with staples. The speaker wires got covered in that black plastic wire wrap so they will not get caught on anything that is set on the rear-facing shelves and, because of all the black carpet, they will visually disappear. I verified that I had enough USB supply-side wire to reach the mid-point above the center shelf, added female wire connectors to them and then popped a chair-connector onto those connectors. 

Out at the bus, I added a male wire connector to the orange wire, completing the set up for the headbanger wiring. I also made sure that the speaker signal supply cables were long enough to drape over the right speaker, where the wires in the bus are. In the picture on the right, you can see just how much extra speaker wire I have hanging down from the bus ceiling. Why? So I can connect things before mounting the headbanger and then tuck the extra up above. Also, by having such long speaker wire leads heading to the stereo, I could unplug the headbanger and plug in a pair of float-remote speakers. Will I? Probably not, but I saw little harm in creating the option.

I was almost ready for the shelf. This was complicated a little bit by the OSB supports I had made. I wanted them to visually disappear, so I spent some time cutting and shaping small bits of trunk carpet to cover them. Finally, the shelf went in, as evidenced by the pictures above. Unlike the glue-on and staple fun of the USB charger face mounting, I wrapped the shelf with carpet and pushed it into place from the front. It is effectively held in place by friction.

The keen eye will notice that the trunk carpet needed some perfecting and trimming. I will address that before I get after the headliner install... which will wait until next time / later. I am feeling the time pressure, and feel the need to get this buttoned up soon. Phil and Friends is coming up fast and we don't have any interior lights or a stereo. So, this is where I am leaving the headbanger for now.... sitting on the rear of my US General rolling tool cabinet. I will get back to this, just not for a little while, probably. LOL's.

That's it for today. Thanks, as always, for following along-

Enter the Headbanger (Part 1)

It seems like the scope of Hapy's interior grows every week. I was just going to do a sound-containment effort, and it has grown in all directions almost from the jump. Today, I visit the furthest end of the sound system: the rear speakers. This little project actually took a few weeks to do, and this post got super long, so I split it into two. I will post the other half once I complete the work. Ha! Apologies for no post last week. I had spent the prior week visiting my son T in Los Angeles, and got back the Monday night before. Before I begin, Hapy Birthday Emily (my sister back East)!

How Did We Get Here?

headbanger from a 1976

So, I'm hanging out with Hapy, thinking about what to do next on the sound deadening one weekend morning and it occurred to me that if I were ever to want speakers overhead in the back of the bus, now was the time to wire them. Once the sound deadener is all the way in, snaking more wires will be much more difficult. While looking around at the furthest back part of the rear ceiling, I remembered that both the original Westfalia and the 1979 had a shelf or headbanger cabinet covering up the rear tailgate torsion springs. So, what had started as a "let's just run some wire" became "let's add a shelf/cabinet thing to hold speakers and cover up that rear-end ugly". More evidence that this bus will never be finished. I actually like that thought, but I'm weird.

Rear Speakers

speaker boxes

Recall, my earlier version of the rear speakers included a pair of speakers that basically floated around. When we were parked, we could move them out the slider for music under the canopy. I did not want to lose that capability, but felt that adding a pair of semi-fixed speakers back in the sleeping area would help the sound because we could actually dial-in our on-the-road sound based on those fixed speaker locations. I ordered a pair of Rockford Fosgate 6x9 speakers and a boom-mat from Crutchfield with a plan to flush-fit them into the lower ceiling, but.... ultimately, I simply could not bring myself to cut 2 big oval holes into the bus. I thought about a pair of 6x9 speaker pods from the guy who supplied the pods for Oliver a few years ago. Those were okay, but the 6x9 options seemed really big, and hung down over 4 inches. I found a speaker box that is curved on the back instead (picture on the right, here). I felt that these would give me more options for targeting the sound and they are quite small. The white lettering is absolutely atrocious, so I literally shot them with black spray-paint to cover it. If I could have gotten these boxes without carpet, I would have preferred that. I intend to cover them with headliner, because, while the spray paint removed the shocking white, the stitched letters are still visible. Wow, so ugly... but they will do the job.

The wiring for these speakers followed the line that the rear defroster wire takes: up the passenger-side A-pillar, and inside the lip along the ceiling. Behind the rear slider, they followed the course along the passenger-side ceiling.

 

Positioning and Modeling

rubber-strap thinking

I started thinking through options for how these speakers could integrate with the roundy rear end by hanging a speaker with rubber straps from the tail gate torsion springs. There is a support that runs from the lower ceiling back to the inner edge of the spring hinge on both sides. I used those supports as my outer edge fixed point. With a speaker in place, I checked the rear-view mirror. I tweaked the angle and tried again. I wanted the top edge to be within an inch of the ceiling, but did not want the lower edge to block too much of my visibility. I arrived at a viable compromise with the outer top-edge of the speaker sitting about 1/2" below the ceiling. Surprisingly, this "compromise spot" set the speaker fairly close to 45*.  This location would remove the top inch or so from the rear glass when looking through the rear view mirror. Based on the picture above, this is more than what is lost on the later bay-window Westfalia when the headbanger cabinet is installed. Can I see out the back? Yes. Will I be able to see out the back when it is packed with stuff? Of course not, but this cabinet is not the difference-maker; my packing ability is. Movin' on, the biggest difference in having this cabinet will be when I try to get in/out of the rear hatch or lean over the open engine access hatch. When I do either of those, I will be reminded why we call these cabinets headbangers.

With the position set, I shifted to solving for mounting. I started with some thin cardboard out of the recycling (surprise: I used a 12-pack box), measuring, cutting and fitting. This was not especially fruitful until I started marking up locations on the ceiling: inner edge of both speakers, and the center point both on the lower ceiling as well as on the upper lip of the tail gate. Now, with more reliable measurements,  I could determine a viable model. I planned for a shelf to run along the entire bottom, from outer speaker edge to outer speaker edge: 37" long, but only 5" deep. To help make the model better, I simply cut a 37x5 rectangle out of the remaining OSB from when I made the front shelf (See New Cab Shelf). With that shelf in hand, I modeled the supports with thicker cardboard. 

support modeled

The rear edge of the shelf required a 4" tall support. From the front edge of the shelf, the support will climb at a 45* angle. The supports on the ends will meet the ceiling directly. The 2 center supports, however, required an additional 2.5" of straight vertical to reach the ceiling, due to the curvy nature of the ceiling. The rear contour of the supports angle from the 4" drop up to 6.5" at the front (on the end supports) of the shelf before running straight forward. A few inches forward of the point where the lower line angles upward, the middle supports run straight up another 2.5" before running straight forward. The image on the right, here, shows the modeled shapes. I tested these with the OSB shelf, placing the cardboard on the spots I marked for where the speaker ends will be. Things looked good 'nuf.

From Cardboard to OSB

I took these cardboard cut-outs and applied them to the cut-up OSB, making 4 supports to go with the bottom shelf. After some fun with the jig-saw, I had 4 supports. This effectively used the remaining OSB, but I had enough to make the structure. Consider, between each of the outer and each inner supports, a speaker box will get mounted. Between the inner supports, I have an opportunity. My plan is to mount a pair of USB charger ports, another shelf and then enclose whatever is left. Since I am out of OSB, I will look to other materials I have lying around. Ultimately, the angled front face will get covered with headliner material, allowing it to at least visually integrate into the ceiling, and cover up the simply awful lettering on the speakers while I'm at it. Win!

glue-in the supports

Onto the base shelf, I drew the lines for where the supports were to be attached and confirmed again that the speakers would fit between. Then, I took the shelf and one-each of the supports and sorta-kinda test fit into the bus (keeping 3 pieces of wood held consistent with 2 hands is tricky). I felt satisfied that the lines, spaces and supports matched up with where I intended them to land, but, again, it's hard juggling 3 pieces of wood. When I built the speaker box for Oliver (See need reference), I learned that the screws were really not the key to making a solid box. The screws simply held the parts together while the carpenter's glue sets. Knowing this, I did not bother with screws at all; I used large clamps. Since I only have 2 large clamps, I did 1 support at a time: apply glue to both sides, set the support in place and then clamp both ends of the shelf overnight. The picture on the right here shows the last support getting glued in. Yes, that is one of those US General tool cabinets I posted about (See $50 Tool Chest) and that is Oliver in the background patiently waiting for dry weather and a trip to get smog certified.

 

More Planning

OSB supports

Now in one piece, I could plan for the USB chargers and such. I figure that the chargers are 2-1/4 inches in diameter, and we will need about a half an inch underneath it to snap-off the cover. To retain symmetry, I planned for a half-inch above, so I rounded up, making the USB face 3-1/2 inches tall. Because of the angle, I figured that the USB chargers would go on the lowest spot, since they take up the least amount of space. Above the chargers, I will put a shelf for setting the things that are getting charged (phones), and, again, because of the angle, the shelf being 3-1/2 inches up from the bottom will increase the depth of the shelf enough for a phone to fit without hanging off the edge, but only barely. The shelf doesn't really need a top, but to clean up the leading edge of the cabinet, I planned for a short drop front which I will cover with headliner. For materials, I have scrap bits of Oriented Strand Board (OSB) to make mounting points for the various flat surfaces. For the flats, I have one of the 1979 Westfalia panels I can cut up. Yes, I could save that for someone, and I could go find some veneer of some kind. But, this is free, and on-hand.

Some Assembly

I drew my plan onto the supports, and cut up a small pile (6) of OSB supports. With my limited number of clamps and vice-grips, I had to follow a similar pattern as I did with the supports: glue as many as I could support with what I have on hand and then wait a day. I oriented the 6 bits to support the USB charger ports and the small shelf directly above.

speaker prep

I then shifted to the speaker boxes. First, I prepared the boxes for speakers to get installed. I set a speaker and corresponding grill into the hole, marked and then drilled out the 4 holes. I set the speakers aside and returned to getting the boxes attached to the cabinet. These boxes deliver with wiring cups already glued in, but the location of the supports will completely hide them. I thought about boring holes in the supports, but decided instead to cut a small channel out of the speaker boxes and run the wire into that gap between the support and box. Then, I drilled 4 holes for each speaker, 2 per support, about 1/4" in from the long diagonal edge. Holding the speaker box in position, I drilled marks into the speaker box fabric, pulled the box aside and then completed the bore. I then returned the box to the cabinet and sent 1-1/4" long wood screws in to hold the speaker boxes in place.

 

For the shelf and USB charger surface, I measured out and cut with a razorblade the rectangular shapes. Into the USB charger surface, I bored 2 2-1/4" holes for the USB charger ports with a hole-saw bit on my drill.

Wire It Up

At this point, the weather outside was frightful. I wanted to take the cabinet out to Hapy to test fit, but I wanted no part of the wind/sleet/rain mix that was going on (it has been an interesting, albeit cold and wet, Spring in the Pacific NorthWest). I worked through the speaker wiring instead. We like the versatility that the plug-in speakers offer so, I added 2 plug-ports on the right rear edge of the cabinet. We will be able to add rear-facing sound our the rear hatch simply by moving the remote 6x9's. You can just see the rough-in plugs in the lower right corner of the picture below.

 

rough speaker wiring

Last, I wanted an ability to turn off the rear speakers from the back, without turning the whole system off. I figured, if there were a point where one of us wanted to take a nap, but the other was just hanging out under the canopy, the under-canopy person may still want some sounds. To resolve, we will fade the speakers to the rear, so the floating speakers still get signal, and then turn off the overheads. How? I added a STDP (single toggle/throw, double-post) switch. I wired the ground/negative-side of each speaker wire through the switch, and planned for the switch between the USB chargers (1/2" hole). The ports and the switch significantly increased the wiring complexity, but once completed, we have 2 plugs ready to plug into the speaker wires in the ceiling, a pair of fixed speakers overhead, a pair of ports for the floating speakers, and an override switch to turn off the sound signals passing into the cabinet.

 

I am going to stop here. Partly because this post has already gotten super long, partly because I have already spent a couple of weeks on this (and I post weekly), and partly because this is as far as I have gotten. I will complete the assembly, cover parts of it with trunk carpet, cover other parts with headliner and then get the cabinet installed/wired into Hapy. When I get all that done, I'll write and post "part 2". Maybe the weather will improve by then.

Thanks, as always, for following along-

Dome Light Mod to Trigger Other Lights

In my ceiling electrical rough-in post (See here), I described the ceiling wiring. Among the circuits, I mentioned the original dome light, and moving it over the slider. I wanted to take this 3-position switched light and have it optionally trigger the dome lights in the rear and the front. Today's post will cover how I made that work.

Original Dome Light

dome switch innards

Let's start with a review of the original light and switch. This switch is some basic stuff. There are 2 wire tabs near the switch and one at the other end of the housing for connecting to ground. The 2 tabs correlate to the wire that connects to the switch on the dash (if you still have it) and the switches in the doors (again, if you still have them). The door switched side of my dome light never worked, and I removed the switch from my dash so I could reuse the hole for the heater fan switch. But, I digress; there are 2 tabs. The tabs relate to either side of the 3-position switch, with the middle position for all-off.

Inside the light housing, how the switch works is more apparent. Each wiring tab has a corresponding little tang that hangs or runs down towards the lens on either side of the plastic switch. Outside of each tang runs a metal arm that connects to the positive side of the bulb. So, when the plastic switch is moved from the middle / all-off position, it pushes the little tang against the metal arm, closing the circuit. When 12V is sent to the corresponding tab, the bulb lights up.

Experimenting

So, with that context, we consider how do we tie into the switch to close a circuit elsewhere. The wiring to the other bulbs has been strung; they just need 12V sent when the switch is flipped. We cannot just attach to the metal arm, because then the remote lights would fire up regardless of which position the switch was in. If that's your goal, then that's great, and less difficult. We cannot just tie into the wiring tab because then the remote lights would be on all the time. We need to somehow tie into the movement of the switch so that when the tang is pressed outward, we can pick it up for the extra lights.

experimenting

I noticed that the little hang-down tangs are not the same length, the amount of exposed brass related to each circuit is not equal and the wiring tabs are 90* offset from each other. I do not know how much these details relate to one another, but the longer length of the one hang-down tang provide a way to tie in. The longer one is attached to the side with less exposed brass overall and with a wiring tab that is parallel with the lens. Again, not terribly relevant.

I conducted some experiments with the switch and a bare-metal female wire connector (picture on the right), as opposed to one that's wrapped with a plastic housing. I was able to set a connector fairly close to the housing, but not touching any brass, unless the switch was moved in that direction. Then, the female connector would make contact with the end of the hang-down tang. It was a great fit inside the lens, and did not prevent the circuit connecting with the metal arm. Similar experiments with a wire connector that had a plastic housing produced different results: did not work. The housing was too thick to fit in the space, even if I cut it down so there was metal exposed for the tang. I tested connectivity with a basic multi-meter to confirm that the switch would create a connection when engaged in the one position, but not at any other point.

After spending the better part of a weekend morning fiddling with this plan, I had to change it. I glued the female wire connector onto the lens and discovered that during the experiments, the connector moved slightly as I activated the switch. So, when I had it completely stationary, it jutted out just enough to prevent the tang from touching the arm: the connectivity on the multi-meter was infinite. So, that bulb would not power up had I left it that way. The lesson here, I guess, was to vice-grip the female wire connector in-place during the experiments so it would absolutely not move.

Tying In

bailing wire tang

So, I considered something that was smaller, and more like the little tang I was trying to interact with: a short stretch of bailing wire. With the tip of my needle-nose pliers, I shaped a hook-end and then a twist to create a footing I could adhere to the lens. Learning from my experimenting mistake, I set the bailing wire tang in place with vice-grips and repeated my experiments. In retrospect, something more pliable for the tang, like some thin copper or even a short stretch of solid 20ga wire probably would have been more effective because it would have more flex/give when the switch was flipped. Still, after a few cycles of set-test-reset-retest, I was able to find the spot when both the original arm and the new bit of bailing wire demonstrated connectivity with the wiring tab when the switch was in position.

I soldiered a stretch of insulated 18ga wire to the bailing wire tang, and then a-fixed the tang to the lens with superglue. Once the glue set up, I repeated my experiments to make sure that I could consistently find connectivity from the wiring tab to the end of the 18ga wire as well as the on the original light.

Triggered

Reasonably or not, I considered the amp draw through that little connection between the tang and the bailing wire, and assumed that expecting 2 lights to get powered through it is asking too much. So, to protect against overheating that connection, I'm adding a basic 4-pin relay. Recall the basics of a relay: when there is a sufficient voltage difference between pins 85 and 86, a connection is made between pins 30 and 87. So, we connect the inbound juice (that will be attached to the tab on the light) to pin 30 and ground pin 85. Pin 87 connects to the wires supporting the remote lights and pin 86 connects to the bailing wire tang I added to the light fixture. Because of where I am putting the light over the slider, there is considerable room in the ceiling for the relay and the extra wire.

Install Awaits

one switch. 3 lights

Parts of this could be installed immediately, but so much of the interior is still in disarray. The sound suppression steps are still ongoing, the remote lights are still just bare wires. I thought about stuffing the relay up into the ceiling, but decided that I could just as well wait and install the whole unit at once. Before setting it aside, I confirmed the concept, though. I pulled out a car battery, and set the 3 light fixtures on my kitchen table. I ran wiring between all the lights, and the relay, and simply played with the switches (note the fuse next on the positive side of the battery on the right edge of the picture). Yes, I did use clothespins to hold the wires together; I didn't want to stress the wires by twisting them together or waste wire connectors. When the original dome light is in one position, all 3 lights fire. When it is in the other position only that light comes on. Perfection. While I had it all set up, I played with the other (remote) lights, just cuz. I will, of course, have to retest everything when it gets installed, but seeing things light-up gives me some confidence that the concept, and maybe even the implementation, will work.

That's it for today. Thanks, as always, for following along-

MGB - Fuel Pump 2 Step

Picking up where we left off with Oliver, the 1978 MGB, we had completed the ignition swap out and we were ready to start the engine and set the timing. Until the battery went flat.

To Start Or Not To Start

AutoZone product picture

At this point, I was ready to test-start it. Or, so I thought. Last Fall, I thought Oliver's battery was going bad. It later turned out to be the clock sucking all the juice while left sitting for weeks (see MGB Battery Monitoring). Before I learned that, however, I swapped the battery out for the battery from the donorZed. At this point in my electronic ignition install, I discovered that the donorZed battery actually was bad. I mean bad. Like, I would put it on the charger overnight and then I could put a voltmeter on it and watch it discharge down to 0. Fortunately, I had left Oliver's prior battery on the trickle-charger, because I guess I was not 100% convinced it was bad. So, I swapped his old battery back in. I turned the key, heard the fuel pump click once, and then heard nothing. In the past, I have had this happen when the fuel pressure had not let off since it was last running. Since the engine had not run since October, that was unlikely. Perhaps the inertia switch got nervous and is preventing the fuel pump? Well, then I would not have heard the one click. Still, I pushed the reset button. No change. Then, I jumpered around the inertia switch, running the wire disconnects through a 3A bladed fuse instead of the inertia switch. Same single click.

Fuel Not Pumping

what arrived

I concluded that the fuel pump, which had not been behaving consistently (sometimes just not working at start up), needed replacing. I slid under Oliver's backend and recalled that the original fuel pump had been replaced by the prior owner for what looks like a universal pump. I can't judge. Quite the contrary, I was not going to invest in a $200US+ original MG fuel pump on the assumption that the fuel pump is the problem either. So, I ordered a Spectra fuel pump from AutoZone for $48US delivered next-day-ish. This pump meets or exceeds the requirements for pressure (3.8psi) and delivery volume (18gph) for an otherwise stock MG engine. I sourced the requirements from this page on the MG Experience. The Spectra offers 2.5 to 5 pounds of pressure and 21gph, has reviews on Azn from MG owners saying they work great and even AutoZone shows these are a direct replacement for the Midget.

It is possible to over-power your carb with too much pressure, so that's one for the back of the mind while trying to diagnose what's going on with the fuel flow through combustion. I may introduce a pressure regulator, but one could argue that adding a cheap pressure regulator on top of a cheap fuel pump starts approaching the cost of a good stock-style replacement pump. While that's very true, I am not running a stock carb either. The prior owner installed a SK Racing (now known as OER) side-draft carb, which seems like a combination of the Mikuni PHH and the Weber DCOE, but this blog post has some great information about them. My knowledge of carbs is extremely limited, so I am accepting this as a learning opportunity.

Fuel Pump 2-Step

Holley Mity Mite

The pump that arrived was not as pictured. Lovely. This one was equipped with a 3/8" barb on one end and a 3/8" NPT female on the other. Into the 3/8" NPT, the consumer was expected to thread in the included mini-filter that has a 3/8" barb on the end. While I am sure a filter is needed, that one they included is tiny and virtually irreplaceable. Perhaps these pumps don't last past a fuel filter change. Since the pictures and the spec's I could see did not match, I was not going to go forward with it; I already have more than enough mysteries with the fuel system. I returned it unopened and got a Holley 12-434 Mighty Mite Electric Fuel Pump. These top-out at 4psi, push 28gph and actually ship with 5/16" hose barbs. Between the delays from CoViD and possible delays from that cargo ship that was blocking the Suez Canal for a week, the arrival of the fuel pump was not exactly immediate. Still, through the power of split-posts, it arrived in time to keep this blog active.

 

Fuel Pump Swap

The pump arrived mid-week, so I started my Saturday planning for the fuel pump swap. Over breakfast, I prepped the wires and assembled the pump and pre-filter. While the Spectra above also delivered with a filter like this, I know that Holley supports replacement pre-filters (I verified on their website). Either way, I figure I have one of those in-line clear filters just upstream of the pump, so I don't expect it to require service too terribly often. For the wire prep, I attached a male wire disconnect to the ground (black) wire and a male disconnect to the positive (red) wire.

ready for install

So, with the pump in one piece, and wire disconnects attached to the wires, I slid under the rear end of Oliver, bringing a collection of tools, a drain pan and a flashlight with me. I closed off the fuel supply from the tank with a small pair of vice-grips. I then moved from that hose forward through the fuel pump, disconnecting hoses and draining the contents into the pan. I only got as far as the pump before I didn't need to drain anymore. Clearly that old pump was not working anymore.

The MityMite is actually larger and heavier than the universal pump I had removed. So, I needed to adjust some fuel line lengths, but otherwise things just fit together. I reused the bolt hole which was holding the old pump to the front edge of the trunk, for example.Once all together, I wired the black wire to the grounding wire that was previously attached to the ground tab on the universal pump. Into the female disconnect coming from the pump, I put one blade from a 3Amp fuse. I put the other blade into the female disconnect which is ultimately wired to the inertia switch. I worked the disconnects with a pair of pliers to get the fuse to stay firmly in place. I wrapped the disconnects and the fuse with electrical tape. Last, I spooled up the extra wire and zip-tied it to the pump pre-filter so the connections would not shake loose.

Pump Test Fire

With everything as I thought it should be, I removed the vice grips and my tools from underneath. I turned the key to "RUN" and the pump fired right up. I left the key in "RUN" and checked the fuel lines for leaks. None appeared, so I concluded the pump was fine. Hoping for the best, I returned to the driver seat and tried to start the engine. Oliver would not start, but the engine would turn. That's a start. I removed a spark plug and I could smell gas on the tip, so We now have fuel and electricity. Next, we need to get electricity to the plug... at the right time.

Recall from my last post that my initial effort to find TDC were wrong, and that I needed to pull the valve cover to figure out true TDC? Well, I did that here. Still, even with true TDC found, Oliver would not start. I did figure it out, but that's my next post.

Thanks, as always, for following along--

Hapy Daily Driving

Well, that title might be overstating it a little bit. To clarify: Hapy is now capable of driving on a moment's notice. With the CoViD safer-at-home, I haven't been going anywhere. I may not have had an operable car for most of the last couple of months, but the lockdown has meant I haven't really needed one either. Today, I'll cover the little things that needed to be buttoned up after the big re-wire.

Reverse Lights

I mentioned the reverse lights at the end of the Electrical Gremlins saga. I had it wired up to a somewhat mystery switched 12V source before. When I tore the old wiring rats nest apart, it was left out of the new wiring. This resolution was fairly easy. Back when I set the mystery wire-up aside, I left the plastic-snap-shut fused wire in tact. So, there was just a plain bare wire to deal with. I fished it up into the spare tire well / wiring compartment from the engine bay. I spliced the wire into the switched source splice coming from relay 109 so the reverse lights will only come on when the computer thinks we are in "RUN". Since it already had an integrated fuse, this was a simple splice effort.

Headlight Flasher

When I was chasing the cause for my lack of amps during P0121 testing, I tore into the dash. I thought I had bumped something loose, and there are a bunch of things in there that could have shaken apart. Well, I didn't bump anything loose causing that issue, but I did bump something during that exploratory. Haha. During the Summer of 2020, I finally got my high-beam / low-beam flasher relay to work. It was because the replacement relay requires a source of 12V to pin 30. This pin wasn't on the old relay, and there is no wire leading to that pin in the original fuse box. I solved that before, but when I was looking for the buzzing noise during the P0121 effort, I pulled that relay and the wire heading to that pin fell out of the fuse box. I didn't notice that then. During post-testing, I discovered that the flasher no longer flashed. I found the wire, re-oriented it so it would not fall out, and returned things back to their prior cleaned-up state (zip-tied fuse-box). Hi-beam flash/relay works.

Defroster

Also in the Summer of 2020, I installed a defroster. Sort of. The defroster solution was moving the Vanagon rear heater under the belly, routing coolant along the driver side main beam and plumbing into the old air channel from just behind the front crossbeam. The air source was an experiment pulling from the old rear floor vent. The mechanical connection of the hoses to the heater was poor, and the experiment fell apart. This source needed to be remedied. Also, the switch was not operating the fan settings correctly. This was caused by poor quality wire connectors, so once the 3 at the switch and the 2 near the heater were replaced, we have a 3 speed fan again.

I decided that rather than solve for a cabin-source of air for the defroster, I would just remove the experiment for now. I have an idea for a source, but other cars need my focus. So, I removed the air supply hoses and called it good enough for now.

Mop Up

During all of the wiring work, the inside of the bus became considerably disheveled. It was one part shed, one part tool box and no part looking like a vehicle. This was easy to resolve, but made a huge difference in declaring the end of the work. The lot couch is back installed as a middle-row bench seat, for example. The rear speakers are hooked up and placed for sound again. After a quick trip with the shop-vac to get the wire-strippings and other fallout from all the work vacuumed up, he looked nearly ready.

I ran a test of the furnace, confirming that it would run on either the accessory battery or the main. It will, but the current draw for the glow-plug is so significant that I'm not sure I will want to start that heater if I am not running at least a float charger to the sourcing battery. Still, it moved the internal temperature of the bus from 43*F to 68*F (6*C to 20*C) in about 15 minutes. For the fuel-minded, it took about 500ml (or ~0.13US gallons or about 2 cups). As I understand it, maintaining the temperature requires far less fuel, so the consumption at that point dropped way off. I left it running for about an hour and the total consumed ml was about 530ml or 30ml (1/8 cup) for the remaining 45 minutes of keeping the bus warm.

I took one last step: I installed plastic kick panels I ordered like a year ago against the rear of the nose of the bus. Just like that, the cab looks like it is not an active project. It looks fairly clean now, actually. They install and remove easily, and once snapped in they really do not appear to need much more to hold them in place. The guy who makes them suggests poking holes through and screwing them into your bus. I might use Velcro, but I'll withhold decision-making until after we have had a few drives to see if they rattle or not.

Getting Legal

This last thing was actually one of the first things I did for Hapy after I set Zed aside. In fact, I think it was the registration that got me thinking about Hapy in the first place. His registration came due, and because of CoViD-19, I had to do it remotely. Since he is too old for smog and Oregon does not have inspections, I have been renewing his registration online for a few years. Still, this time I did the online steps in October 2020, but did not receive the stickers for his tag until January 2021. This used to take a couple of weeks at most. It sure felt good getting those stickers on his plates, though.

Test Drive

With the tags updated, the wiring fresh, the defroster responding, furnace functioning, etc... Hapy appeared nearly ready to be pressed into service. We just needed a test drive. For that, I did my usual neighborhood lap through a series of side streets out to the main drag, a quick 1-mile straight shot on that major street and then turning back into the side streets for home. As expected, Hapy was fairly peppy and responsive. He sounds great, and did not suffer any P0121 issues. There were a few stutters, but no codes, so I chalked that up to old diesel. That will solve with some snake oil and a fill-up. Considering that Hapy had not left the driveway in over a year, this drive was significant, albeit short.

Alt-Light

The battery light came on when the engine was revving low during the test drive, leading me to think that the unsettling "pop" noise I heard when the wiring was wrong (See Chasing the Hapy Electrical Gremlins - Part 6) was the sound of my alternator frying. This light had been popping on during testing, so the fact that it returned during the road-test honestly just reminded me. Before I jumped into anything, I in-bus tested the alternator: I alligator-clipped a fused wire to the alternator output and ran that wire on the ground up to the cab. There, I electrical-taped the bare wire to the positive probe of my multi-meter to free a hand. I set the negative probe into a small bolt-hole in the driver door frame for a good ground. First, a good base reading: 13.5V. Cool. I started the engine and it dropped down to 12.4V. Solid. With my hand on the go pedal, I revved the engine and watched the voltage climb up and down peaking above 14V. So, the alternator is fine. Since I have been running without an ALT/GEN light for 10 years, I could just ignore that light... Nah, I just can't do that. I figured that the bulb must simply be connected to the wrong wire of the 2 in the ALT plug.

I had spliced into the wire heading to the computer (DFM - or Digital Field Monitoring), and it needs to hit the one that routes to the cluster (L - Lamp). Simple fix: I cut the splice from the donor main harness to the 6-wire cable, and tied it into the other wire from the plug just upstream from the 4-pin plug. While I was back there, I added ring terminals to the sensor wires for the oil pressure and oil idiot light. There remains some wiring tidying I need to do on the driver's side, so I'll cut out the rest of the DFM-sourcing wire when I'm in there. 

As much as I'd like to say that once I completed, I took another test drive... I can't. I did test start and engine-rev in-place, however, just to see that ALT light wink out (which it did). Why did I not drive him? Well, remember Gramps (1996 VW Jetta 2-dot-slow from my folks that we gave to K2)? He re-appeared with a failed throw-out bearing after the first test drive, but before I'd solved the ALT light. So, I will have to juggle the herd to get Hapy free for a drive. And, you can probably guess what I'll be working on next.

That's it for today. While I may not need to go out much due to CoViD restrictions, I now have my beloved turbo-diesel powered microbus available-ish for whenever the need arises. While there are lots of little things I could tweak on Hapy, none of those things would prevent me from taking a drive. Sweet, sweet success. Thanks, as always, for following along.

Reverse Lights

Quick post today. After not having operational reverse lights for pretty much the entire time I have owned Hapy, they are now operating.

Bus Reverse Lights - stock

reverse switch

Let's start with how these lights are supposed to work. On the transaxle, there is a small switch threaded into the case. It has a small pick-up inside the transaxle that is depressed when the reverse gear is selected. My original transmission had gummed up the switch, so it didn't work. Or, maybe it was just old and failed. It doesn't matter. While I could have replaced it, I was focused on other stuff... and then that engine swap thing happened... Anyway, that switch receives 12V from the positive side of the coil through a black wire. The wire, obviously, goes to one side of the switch, and the signal is sent from the other, down another black wire, to the driver side reverse light. These 2 wires are bundled together for about half of their travel, separating near the low-point of the spare-tire well. The source wire goes to the coil. The signal wire goes to the light, and a second wire, which is part of the rear wiring bundle, takes the light signal to the passenger side. So simple.

Bus Reverse Lights - after engine swap
Like I mentioned above, the original source of the 12V is the coil. If you are running an engine that had a coil, that works great. The TDI, of course, doesn't, so I have to find an alternative source. Fortunately, since the 12V source wire split off from the bundle at the low-point of the spare tire well, AND all of my electronics are in the spare tire well, this turned out to be quite simple. I located a switched source among the wire bundle and wired an in-line fuse into it. To the other end of the now-fused circuit, I connected the black wire from the reverse switch. I didn't mention before, but I installed a new reverse switch into the rebuilt transaxle when I installed it into Hapy.

Testing
To test, I put Hapy into reverse and turned the ignition to "run". The driver-side reverse light lit up. It was actually pretty bright. Nothing from the passenger side. Now, before immediately assuming something in the wiring was all jacked, I figured I'd look at the bulb first. 3 Phillips screws later, and... the passenger side didn't even have a bulb. Hahaha. I guess when I replaced the light fixtures all those years ago, I ran out of bulbs. Fortunately, I had a single-filament bulb, so with a quick twist, I tested again. This time, I had both bulbs light up.

At this point, I realized how fortunate I was and called it a day. Yes, I could have gotten into all kinds of other things, but it was already 4:PM, dark was approaching and I knew that when you have a win, take it and don't be greedy.

So, that's it for today.