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I am going through my project car and trying to track down why the headlights arent working. The headlights and running lights are not working. Testing the connections i am seeing the the ground has power. While tracing the wiring back and testing the combination switch behind the steering and the hi/low switch crumbled to bits and broke. I am going through the 1977 wiring diagram and trying to understand what goes where but i cant find the short and its useless.

can i get a good wiring harness or partial harness?



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I've done more research and grounded one of my headlights and that works. I've now moved on to the rear running lights which are not turning on with the headlights. I am getting no 12V send to just the running lights. the breaks, reverse, and turn signals all work fine. looks like im not getting any 12v to the green/yellow. I tried following to C10 but no luck at this point. Im trying to open each connection to clean them but they are extremely stuck.

The switch on top of the steering column has the power supply contacts for both the running lights and the headlights. Have you opened it up? Search "headlight switch" and "headlight switch hot" on the site and you'll probably find some good threads. The contacts get pitted and stop working, or the heat causes the solder joints to break.

Thank you for that information. Yes last night i opened it up and found one of the spring contacts was missing entirely and the other one was severely bent. I attempted to create my own but was unsuccessful. Im going to take it apart again today to see if i can repair.

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