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Old 10-13-2007, 09:59 PM   #1
1987_3/4ton_chevy
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Headlights turn on, so does back-up lights

Hey, whenever i turn on the headlights the back up ligts flip on... is that a short somewhere or what could be causing this problem?
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Old 10-13-2007, 10:09 PM   #2
84_4x4
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Re: Headlights turn on, so does back-up lights

sounds like a short somewhere in either wiring harness for taillights or trailer harness i would start with looking at a trailer harness because of thats screwed up it could cause this problem reverse light wiring shirted to parking light wiring
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Old 10-13-2007, 10:30 PM   #3
1987_3/4ton_chevy
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Re: Headlights turn on, so does back-up lights

well as of right now i do not have a trailor harness cause it was crap.
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Old 10-14-2007, 12:21 AM   #4
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Re: Headlights turn on, so does back-up lights

two different systems. definately sounds like something in the rear harness. Thats pretty much the only place the wires would be near each other. most likely crossed wire short.
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