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Old 05-10-2003, 08:26 PM   #1
72gmcshorty
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Join Date: Jul 2001
Location: North Delta, British Columbia
Posts: 1,344
How do i track down light harness problem?

I think my headlight harness on my 72 gmc has a short somewhere. How do i track down this problem? I've grounded the crap out of this harness and still it won't work properly. As soon as I put power to the harness directly from battery, the yellow lights and the side turn signal lights come on. When I turn on my headlight switch, only one headlight comes on and the yellows and side markers stay on. When I put on the high beams, everything lights up. What could it be? My rad support is powder coated. HELP ME!!!
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1992 Gmc 2wd
1972 Chevy Blazer 2wd
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