E.V.Oh Speedwagon, Chapter 6: Wiring and cooling system,

Submitted by Danny on Sat, 04/19/2025 - 23:43

Wiring is underway, I'm about half way done, if you only include essentials to get the wheels running. The Resolve wiring harness, ignition, F/N/R switches, throttle pedal, water pump, brakes lights, etc. Horn, headlights, wipers, reverse lights, etc. can wait until I have more time. (Wipers will be a whole ordeal, but I think I can use a 1990 Jeep wiper motor, if it can be adapted to the FoMoCo linkage).

I was able to cram the VCU, two fuse boxes, a large relay box, the main relay, and the OBD-II port all into the glove box and still leave room for the heater/air-con box.

I love doing the wiring, especially compared to replacing rust-seized leaf springs or rebuilding drum brakes. For starters, I got the bench seat to lay down on while I do much of the work. Which is really nice, usually I'm dealing with bucket seats and center console so the only way to do it is to be completely upside down with my ass up in the air, my back in an awkward angle, and my head crammed into the floorboards. Bench seats are a game changer, just give me a pillow and I could do it all day long. Plus it's nice because I'm not re-using any of the old wiring harness. And that just makes everything easier to deal with in my head.

Another cool thing about wiring up my own car from scratch is I get to decide how I want everything to work. I've decided that there will be no headlight switch, instead the headlights and tail lights will always be on when the car is on. That way I don't have to worry about the mess of wires surrounding the light switch, which back in the day also doubled as the fuse box. There was no relays back then either, apparently.

And I'm also change the rear lights. Originally, each side had one red lens for brake lights, tail lights and turn signals, and a white lens for reverse lights. I've instead put two red lenses on each side and now I can have brake lights and turn signals on seperate lenses. I'll have to add an aftermarket reverse light somewhere.

The question is, should brake lights be on the inner or outer lenses? Hmm....

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