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08-13-2016, 04:02 PM | #1 |
Registered User
Join Date: Jun 2016
Location: Stevenson Ranch, CA
Posts: 62
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1972 C10 no rear running, brake, reverse, or turn signal
My 72 Cheyenne C10 402, 4 on the floor has been riddled with wiring issues due to tons of Mickey Mouse repairs. Including a wire that was installed from HEInto starter solenoid which made entire ignition Unfused circuit continuously live (Arrrrggg)
After cleaning up all wires and making sure everything is correct we have managed to get headlights and front running and turn signal lights to work, but rear running, tail, turn signal and back up lights do not work. I've checked all the fuses checked for voltage at lamp housings (zero voltage) and am stumped. I traced the wiring that comes from the switch to back lights and tested with a probe no power going to rears at all. Since the power I believe comes from the switch I am guessing the switch may be bad but why no brake or turn signal lights. On a separate issue back up lights not working working either but want to fix running, brake,turn signal issue before I deal with backups in case lack of power is root of the problem. Any thoughts? I'm not a wiz but I can trace a circuit. Ps there was trailer wiring harness that was installed, I disconnected the wires and removed the trailer brake switch it was falling apart. It had 1 wire going to trailer wiring harness the other to power distribution block near the battery. What I don't know is if the lights were working before I did this. We bought the truck not running in NM and trailered it back so lots of mysteries we are slowly solving. |
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