Re: Headlights cut out completely after hitting high beam dimmer switch
As mentioned, the dimmer switch on floor is most likely suspect. If it is lose, tighten the hold down screws.
IMHO installing a headlight relay harness is a good idea on any of the 50-70's cars, trucks. LMC sells one. Plug and play, no cutting any wires. It removes the full 12v load off the headlight switch, so headlights and ALL lights are brighter
This is where I installed mine. Just drilled 2 holes to mount relays
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