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Old 10-10-2007, 12:37 AM   #1
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Default Electrical headlight problem

I have a friend with an unusual electrical problem. His left headlight woks fine until you turn on the high beams, then it goes out. He'* changed the bulb and also put a jumper wire from the right one with the same result. He'* asked me to go look at it on the weekend. Any ideas on what might be happening??
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Doug

PS - his car is the same as mine, '93 SSEi
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Old 10-10-2007, 12:41 AM   #2
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Is this for the '93 SSEi in your signature? If not, post the year and trim of the car he has.
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Old 10-10-2007, 09:19 AM   #3
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Default Re: Electrical headlight problem

I would start by cleaning the grounds behind the battery and on the fender over the charcoal canister on the driver side.

It sounds like it'* either a bad bulb or a bad ground. Either way..it'll probably come down to a lack of ground due to a bulb or bad ground..
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Old 10-10-2007, 09:53 AM   #4
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Yup, I am thinking a bad ground. They can do some really funny things.

I had a 1982 Grand Prix that the pass side dim would blink with the blinker because a ground wire had fell off the core support
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Old 10-10-2007, 10:03 AM   #5
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Default Electrical headlight problem

Thanks guys, I'll take a look at that on the weekend and let you what I find.
Doug
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Old 10-10-2007, 11:48 AM   #6
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Doug..don't under estimate that it could be nearly any other bulb in the front of the car. It can be.
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Old 10-13-2007, 03:00 PM   #7
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Default Electrical headlight problem

Got the problem solved although it was an unusual one. Made sure it wasn't a ground issue and verified that there was power right to the bulb. It turned out to be a frayed high beam wire in the harness. It would let voltage through but not enough amperage to power up the bulb. Fixed the weak link and it now works. Thanks for you input.
Doug
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