Hey bud,
So, previously did have a ground issue. Added an additional ground and ran power from the battery through the intermediate harness through the rear and got all lights (except one reverse, don’t care about that right now) working. So harness is grounded and there’s no faults in the...
Okay I’ve been going crazy and figure one of you fine folk can help me.
1976 gmc c15 with the 350 and auto trans.
Off truck with power and ground straight from battery, all lights work. Plugged to truck, only headlights (low and high), blinker/flashers work.
No parking lights or running...