Turn signals not working, blowing fuse

hotrod swinger said

I’d like to try to isolate the problem by disconnecting the radio terminal and checking the wires.



What are the orange wires and what do I do with those?

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Orange are typically all the dash dimmer controlled lighting. That is a low power circuit and unlikely to be the problem. That circuit is a "trick." There are two feeds to the light switch. Headlights ONLY are powered by unfused power coming from the black ammeter wire "welded splice." There's a breaker in the light switch

The dash dimmer and tail/ park circuit is powered from a separate fuse. That power goes through the dash dimmer and back to the fuse box (on tan) to the small INST fuse, at one end of the fuse box. That fuse is only powered when the lights are at least on park, when the tail light circuit is working (fuse) a nd when the dimmer control is turned "some" to the left.