1987 brat wiring issue

[comatosellama]

Does anyone have a wiring diagram for where the main power for the interior electrical, headlights, ect get their power from? PO did some weird wiring, that has now gone defunct. I have the fuel pump, and starter on their own relays. I want to find where I need to hook up a power line to get the rest of the systems to work (headlight, horn, interior lighting, turn signals).

 

thanks a ton 

CL

[musubk]

My PO had done their own wiring and fudged things up quite a bit - when the low beams were on, both high and low lit up, but very weak and dim. When the high beams were on, ALL the wires at the bulbs were getting 12 volts, so nothing was lighting up at all. I think they must have had a light issue at some point, not realized it was supposed to be a common positive system with switched ground, and tried to 'fix' it under the assumption it was common ground with switched positive.

Anyway, I ended up just taking the power wire directly out of the 'headlight' fuse in the dash fuse box, feeling around the contacts on the steering column headlight switch with a multimeter until I knew which contacts had continuity in every switch position, then wiring the whole thing from scratch as a 'normal' common ground system, using underhood relays for power to the lights. I ended up spending less time doing that than I wasted trying to figure out the POs wiring (and I never did figure out exactly what they did). From the driver's point-of-view it still looks and works like factory, using the rotary switch thingy and pushing the flasher stalk forward for high beams.

 

So if you're wasting a lot of time trying to figure out how to fix what's already in there, you may be better off starting from scratch.

 

Just wait until someone down the road tries to figure out MY wiring job