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headlight wiring weirdness.

  1. 29fordcoupe
    The head lights were blowing a fuse randomly when transitioning headlight or dimmer switch .

    I replaced the headlight switch and the dimmer switch.

    With headlights disconnected all other lights worked without blowing fuse.
    Rewired headlights and reconnected one of them. and exercised the lights and the fuse did not blow.

    With one head light hooked up, everything works fine, including the LED high beam indicator light.

    With both headlights hooked up, the LED high beam indicator stays on.

    I checked voltage at the high beam output of the dimmer switch and I get 12V when high beam is on, and 6V when high beam is off.

    Checked out dimmer switch and it is good.
    The 6V that is keeping the indicator light on must be feeding back from the headlights????

    What should I check next?

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