View Single Post
Old 03-30-2023, 12:07 AM   #6
RustyPile
Registered User
 
RustyPile's Avatar
 
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,533
Re: Headlights cut out completely after hitting high beam dimmer switch

Quote:
Originally Posted by awbanks View Post
Took my 71 C20 out for a stroll around the block this evening.
When I hit the dimmer switch for the high beams - the headlights cut out completely.
All other lights are working fine. I didn't dig into the issue tonight. I plan to get back out there tomorrow and see if I can track down a faulty wire or ground.

Any ideas?
There are no fuses for the headlights, so don't wear yourself out looking for one. The headlight switch has a built-in circuit breaker that automatically resets itself. Don't use W.A.G. techniques, and parts slinging hoping something sticks. Go here:

http://67-72chevytrucks.com/vboard/s...d.php?t=185856

and download the proper wiring diagram for your truck. Start with the dimmer switch, use a voltmeter or 12V test light to check for continuity, bad switches, bad/corroded connections, burned/broken wires, etc...
RustyPile is offline   Reply With Quote