How do i track down light harness problem? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72gmcshorty · 05-10-2003, 08:26 PM

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!!!

05-10-2003, 08:26 PM	#1
72gmcshorty Registered User 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!!! __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

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