head lights shutting off 72 bronco

[David A. Bem]

can someone tell me why intermittently headlights go off dash lites ok, headlight switch replaced years back could the ckt breaker be bad for them please help wiring sockets fine if you shut off lights wait they come back on as if some thing is cooling down

 

[Scoop]

Exactly - heat overload breaker in the head light switch. A relay harness will solve your problem.

Head lgiht harness

 

[miikee73]

http://www.tomsbroncoparts.com/product/Heavy-Duty-Headlight-Wiring-Harness-66-77-ford-bronco-new
Or this one

 

[Broncmeister]

Check your dimmer switch on the floor too, I've seen bad ones cause headlights to go off.

 

[EBatl]

X2 on the dimmer. Next time they go out pull the wires off the dimmer and connect them together to bypass it and you'll know if it's the issue

 

[blazinchuck]

Check your dimmer switch on the floor too, I've seen bad ones cause headlights to go off.

X2 on the dimmer. Next time they go out pull the wires off the dimmer and connect them together to bypass it and you'll know if it's the issue

yes!!! i had this issue with my 77...new headlight switch...no fix, new head lights-no fix, new dimmer...FIEXED never had it happen again(almost 2 yrs now-just upgraded to H4 and relay harness too)

 

[David A. Bem]

Thank you dimmer switch from advance auto parts china junk,, going to napa today, already changed pigtail on dimmer switch harness

 

[tatersalad]

Ditto on the dimmer switch, I would recommend changing the system to a relay setup also, I bought my relay harness on ebay for 19.00 + shipping, bought headlight conversion to H4 style from Kragen for I think 25.00 and the cheapest bulbs I could buy until I can afford the better ones for about 10.00... my headlights are 100 % better.

 

[Oakland Bronco]

can someone tell me why intermittently headlights go off dash lites ok, headlight switch replaced years back could the ckt breaker be bad for them please help wiring sockets fine if you shut off lights wait they come back on as if some thing is cooling down

Do you have aftermarket lights but no relay? When I got my rig, I could drive for about 15 minutes before my headlights started flashing on and off. If I pulled over and turned off the lights for 3-5 minutes, they would come back on, but then start flashing a few minutes later. I put in a headlight relay as others have mentioned and have had no problems since.

 

[01Dudley]

http://www.dufftuff.com/PhotoGallery.asp?ProductCode=7205&PhotoNumber=7

Only sale for $115! Lights and relay wiring harness.

If needed or interested.

X5 on dimmer

 

[nrramse]

Do you have aftermarket lights but no relay? When I got my rig, I could drive for about 15 minutes before my headlights started flashing on and off. If I pulled over and turned off the lights for 3-5 minutes, they would come back on, but then start flashing a few minutes later. I put in a headlight relay as others have mentioned and have had no problems since.

This is what's happening to me too. I replaced all the running lights with LED's and now the headlights seem brighter, which is neat, but the high beams now start flashing after a few minutes. I've replaced the headlight switch, but no affect. I'm considering a relay, but I wonder if anyone sells a better headlight switch? I like to keep wiring down to a minimum.

 

[707Bronk]

Check your dimmer switch on the floor too, I've seen bad ones cause headlights to go off.

X2 here. I would still test out the breaker first though.

 

[707Bronk]

This is what's happening to me too. I replaced all the running lights with LED's and now the headlights seem brighter, which is neat, but the high beams now start flashing after a few minutes. I've replaced the headlight switch, but no affect. I'm considering a relay, but I wonder if anyone sells a better headlight switch? I like to keep wiring down to a minimum.

Installing a relay kit is arguably easier than replacing your headlight switch.

 

[Viperwolf1]

Installing a relay kit is arguably easier than replacing your headlight switch.

And more effective at making the headlights brighter.