headlights turning off while driving

[XXLMJ]

So i drive my 89 to work everyday 4.0, 5speed, 4x4. Has a H.O. swap done by the PO. And 2 times in a row about the time i get to work my headlights start tuning off then on then off then on. Not for sure what the problem is, i kinda looked at the fuses to make sure none were loose, but couldn't find a headlight fuse. Do they have relays? And could they be getting warm by the time i drive 30min to work? Or should i start checking connections under the hood?

[Automan2164]

There is a circuit breaker in the headlight switch. Sounds like yours is going out. All you have to do is replace the switch. Happened on a '91 XJ I had.

 

Rob L.

[jimmy21669]

Did you wiggle the switch at all while they were on? That could be going too...

[XXLMJ]

It did it 2 days in a row now i the last 2 days i can't get it to do it. Got to love electrical

[signalb]

Make sure you check your ground wire too.

[vaquaro]

Had simular event , replaced H/L switch , happened again so started wiggling any connector I could find in the circuit . Finally found a loose wire at the steering column plug in for Hi/Lo switch operated by the turn signal stalk . :dunno: Worth a try before throwing cash at it :yes:

[XXLMJ]

Well I finally got tired of blinking my lights a random people so i changed the headlight switch and that fixed the problem.

[Automan2164]

Its more fun like that. I just held back the brights when the circuit breaker would trip. Then, eventually, I had a headlight blow, and with just one it wasn't enough to trip the breaker... So I just drove around with one headlight until I sold it.

 

Rob L. :cheers: