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Old 01-24-2010, 09:26 AM   #1
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Question Lights on! Lights Off!

Hi,

I have a 1999 Wrangler SE, very clean slim to no rust, garage kept, and well maintained.
Here is an issue I am having. I will be driving for about 30 minutes or better at night and the headlights go out. Tail lights and markers and dash lights stay on. This last about 5 seconds or enough time to say Crap! Whatever comes first. Then the lights come back on. If I pull the light switch on and off nothing happens, headlights still stay dark. The headlights come on as mysteriously as they went off. Here is what I check so far. I checked connections to the headlights. I checked ground wires connected to the body. I see a little corrosion by the negative post on the battery, but as for the other grounds to the body they look clean. Haven’t had time to poke my head under the dash yet, but I was wondering if anybody experience this issue before, and if so what was the fix.

Thanks

Jerry

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Old 01-24-2010, 09:47 AM   #2
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I don't know anything about older wranglers, but

You said "pull the light switch"--BINGO

Detroit stopped using push/pull switches in the major dealers(years ago), because of the switchs UNSUPPORTED END when pulled out, whitch caused internal contacts to open/wear unevenly

That switch would be my first guess, otherwise a loose gnd or + contact in the fusebox, or loose fuse

Good luck

JIMBO

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Old 01-24-2010, 09:47 AM   #3
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I might check/change the fuses and the relays. They are a simple fix. Do youhave fog lights? If so do they go on/off also? did this always happen or is something just recently started?
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Old 01-24-2010, 10:18 AM   #4
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Replace the headlight switch, that's all that is wrong. It's a simple, fast, and inexpensive thing to do. Also, there are no relays in the headlight circuit.
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Old 01-24-2010, 10:47 AM   #5
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There's a relay between the headlights and fog lights.....I've seen it, and bent one prong back so the fog lights stay on when the high beams are on. No?
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Old 01-24-2010, 10:49 AM   #6
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There is a relay in the fog light circuit to shut them off when the high beams are on but there is no relay in the headlight circuit itself.
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Old 01-24-2010, 02:16 PM   #7
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Just like Jerry said, headlight switch, had the same problem on my mustang, replaced the switch. Never happend again.
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Old 01-24-2010, 02:38 PM   #8
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Jeep, Chevy, Ford, Chrysler, doesn't matter, when it comes to a push pull switch.............I bet its the switch.
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Old 01-24-2010, 02:42 PM   #9
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Yup. Headlight switch. My 97 did the very same thing. New switch = Fix.
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Old 01-24-2010, 04:21 PM   #10
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Your was a Jeep, the first time I ran across that problem was in a 64 Impala
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Old 01-26-2010, 01:12 PM   #11
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Thank You

Thanks everyone for getting me on the right track. I just placed the order for the new headlight switch. I will follow up in a few weeks.

Thanks again and Happy Trails

Jerry
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Old 03-15-2010, 02:43 PM   #12
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Hey everyone,

It worked, replaced the switch with a OEM part. No troubles since.

Be Well.
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Old 03-15-2010, 03:13 PM   #13
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Quote:
Originally Posted by Jerryspc View Post
Hey everyone,

It worked, replaced the switch with a OEM part. No troubles since.

Be Well.
It surprised me that when I replaced my OE headlight switch with an OE replacement bought from Autozone, the replacement was identical... right down to the little blue inspection sticker on the switch with the QC inspector's initials... same initials & handwriting. That's what you call an OE switch replacement!
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Old 03-15-2010, 03:20 PM   #14
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WOW! As CCAIN would say "thats amazing"

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