Headlights quit working - JeepForum.com

 
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post #1 of 14 Old 01-01-2009, 10:44 AM Thread Starter
kmas0n
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Headlights quit working

I have a 2000 TJ sport. last week I went to drive to work and the headlights would not come on. The parking lights and fog lights came on like normal, just no headlight. I clicked on the high beams and they worked too, Everything except the low beams.
I checked the fusses, they are all good, I replaced the on/off headlight switch and that didn't fix it
I replaced the left multi function switch (blinker) and that didn't fix it either.
There are no obvious abrasions or cuts in the wiring...
whats left?


any help is appreciated

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post #2 of 14 Old 01-01-2009, 10:51 AM
never monday
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try replacing the bulbs
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post #3 of 14 Old 01-01-2009, 10:57 AM
Cchandler
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ya, you needs to replace the bulbs. The low beams burnt out but the high beams still work because they are double filament. This just happened in one of my headlights, I just leave them on high until I have the money to just go ahead and get the IPFs and Fatboys! Good luck! Post if that didn't work.
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post #4 of 14 Old 01-01-2009, 10:57 AM
Stu Olson
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Do you have a voltmeter or a test light?

If so, check on the back of each head lamp to see if you are getting +12V when you turn on the low beams. You can verify your meter or test light is working by checking your high beams since you know they light.

If you get +12V on the low beam contact on the back of the head lamp but it doesn't light, your problem is a bad lamp. If you don't get +12V, then your problem lies elsewhere. At that point, a good factory service manual's wiring diagram is the book to consult.

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post #5 of 14 Old 01-01-2009, 11:46 AM Thread Starter
kmas0n
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I went to parts store to buy a new voltmeter. lol Happy New years. not open today. I'll get back to you guys. I'm thinking its not the bulbs that burned out... although not impossible, its highly unlikely to have two bulbs burn out at the same time. Luckily... I have the factory repair manual from jeep with full wireing diagrams. I have the feeling I'm going to need them
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post #6 of 14 Old 01-01-2009, 11:47 AM
never monday
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Bulbs are cheap enough at WalMart. Go buy one and plug it in to test.
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post #7 of 14 Old 01-01-2009, 11:48 AM
Rocky529
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My dad's Jeep just had a similar problem and it turned out to be a faulty switch.

2004 Jeep Wrangler Sport - 5 speed

Silver Metallic finish with black dual tops - Dana 44 Rear
2.25" Suspension Lift with Old Man Emu Shocks
Performance Accessories 1" Body Lift
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post #8 of 14 Old 01-01-2009, 11:55 AM
RuffTJ
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Im having the same problem with my headlights. Except I know the bulbs aren't out because its only the driver one for me and sometimes it will work perfectly fine and sometimes not at all. i should mention i have the Delta 7" Xenon headlights.
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post #9 of 14 Old 01-01-2009, 11:55 AM
Slithering_Joe
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You'll hit yourself for not verifying before buying. Simple easy test/diagnosis. Just like the lottery. It's highly unlikely you'll win but it sure pays out when you do.

Quote:
Originally Posted by kmas0n View Post
I went to parts store to buy a new voltmeter. lol Happy New years. not open today. I'll get back to you guys. I'm thinking its not the bulbs that burned out... although not impossible, its highly unlikely to have two bulbs burn out at the same time. Luckily... I have the factory repair manual from jeep with full wireing diagrams. I have the feeling I'm going to need them

4.0L TJ
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post #10 of 14 Old 01-01-2009, 11:55 AM
Stu Olson
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Quote:
Originally Posted by Rocky529 View Post
My dad's Jeep just had a similar problem and it turned out to be a faulty switch.
Quote:
Originally Posted by kmas0n View Post
I replaced the on/off headlight switch and that didn't fix it
Was it the hi/low beam switch that he replaced?

Stu Olson
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post #11 of 14 Old 01-01-2009, 12:23 PM Thread Starter
kmas0n
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Yeah stu it was the high/low switch... also controls the blinker and hazard lights- combo switch. The left blinker always stayed on after a turn anyways so I didn't mind replacing it. I ALSO replaced the on/off pull switch in the dash.
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post #12 of 14 Old 01-01-2009, 12:26 PM
Slithering_Joe
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TJ Headlamp harness connector:

Wire Color : circuit description
(main color / stripe color)
-----------------------------------
VIOLET/WHITE : +12V, Low Beam
RED/ORANGE : +12V, High Beam (flash-to-pass)
BLACK : Ground (-)

4.0L TJ
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post #13 of 14 Old 01-01-2009, 01:03 PM Thread Starter
kmas0n
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Well, as unlikely as it may seem... I got my hands on a test light and there is 12v going to the headlights. It seems both headlights did burn out at the same time. Thanks everyone for your help
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post #14 of 14 Old 01-01-2009, 01:17 PM
Slithering_Joe
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Time to play the lottery.

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