Headlights
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Headlights
My headlights on my 1980 F250 will intermittently start blinking on and off. It happens after about 20 minutes of driving. It also starts happening after I switch to the high beams and switch back to the low beams.
Hotshot
Joined: Jul 2002
Posts: 18,340
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From: Sheridan / Gilchrist
Welcome to FTE.
My 78 F250 had that problem. It would happen quicker if I had the camper, boat or horse trailer and all of the clearance lights on. Had to replace the headlight switch to fix it. IIRC there is a circuit breaker on the switch that would overheat and pop. Cools off and resets.
My 78 F250 had that problem. It would happen quicker if I had the camper, boat or horse trailer and all of the clearance lights on. Had to replace the headlight switch to fix it. IIRC there is a circuit breaker on the switch that would overheat and pop. Cools off and resets.
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Joined: Nov 2007
Posts: 22,415
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From: Denver Metro Area, CO
Yes, the headlight switch has a circuit breaker in it.
BUT...
There is also a tan wire in that mess right at the switch that is famous for melting, it can short-circuit with other wires when this happens.
There is also the dimmer switch on the floor.
I would remove the top dash pad and also maybe the gauge cluster to get a good look at the wiring at the switch if it were me.
BUT...
There is also a tan wire in that mess right at the switch that is famous for melting, it can short-circuit with other wires when this happens.
There is also the dimmer switch on the floor.
I would remove the top dash pad and also maybe the gauge cluster to get a good look at the wiring at the switch if it were me.
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I purchased and installed a relay wiring harness for the headlights. So far so good. My lights are brighter and my high beams are working now. Hopefully this solved the problem. I did also buy a new switch. I will hang on to it for a later date.
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