Headlight switch drama

67Dart273 said

I would suspect you are making a l mistake somehow. You are aware? That the tail /park circuit gets power from a separate source. B1 /B2 both must be receiving power. Check it under load. Install it loose, hanging down so you can access the terminals. Pull on park. Check that B1 and B2 are both hot and whether the tail and park are also hot.

If not, and they actually really are defective, I don't know what to say. Round up a used one, and install two relays, one for high, one for low beam.

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67Dart273 You were right, there is a second 12v supply. After looking more closely at the wiring diagram, the brake light switch has two wires on one of the connectors, one of which is hot and coming from the fuse block, and the other goes to the B2 terminal on the light switch. So this is why there is supposed to be 12v at B2 as well as B1. I was assuming that there was a single power supply at B1. Makes sense that the tail lights would be on a different feed. So now I need to trace that wire on the brake switch back to see why I'm not getting 12v from the fuse block.
Thanks for pointing me in the right direction. I had a major Mopar rookie brain fart there. :lol: