I have a 1980 C3 with a rear window defogger. I don't know if the defogger works or not because the 10 gage orange and black wire that powers it is not hooked up. It was off when I got the car. My problem now is a don't know where that wire plugs into the fuse panel. It has a 35 amp breaker on the fuse panel that is used to regulate the power, but I still don't know where to plug in the power wire from the panel back to the window.

If anyone knows where this wire plugs in, please tell me.

Any help is appreciated, thank you, Larry

 

Best thing I could suggest for you to get a copy of the wiring diagram in the service manual. Some aftermarket venders sell just the wiring diagram and I believe it's laminated.