No taillights, break lights, turn singnals, nothing

1993 CHEVROLET 1500
145,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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JOSHUA ARBUCKLE
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  • 1 POST
Have 1993 chevrolet k1500 4x4 5.7L with 145000 miles. Lights worked then they all stopped working at once. Checked fuse good checked bulbs good check the T harness and the brown wire is broke off. Would that take all the lights out in the rear?
Apr 12, 2021 at 6:31 AM
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DANNY L
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Hello, I'm Danny.

Yes, the brown wire if broken controls all the rear exterior lighting. Here is a tutorial showing how to test wiring:

https://www.2carpros.com/articles/how-to-check-wiring

I've attached an exterior lighting wiring diagram below for your truck. I've circled in red the areas where the brown wire is routed. I enlarged a few pictures so you can view larger. You should just be able to repair the connector or splice the wire to fix. Just be sure to use heat shrink tubing after repair to keep out moisture. Hope this helps and thanks for using 2CarPros.
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Apr 16, 2021 at 3:56 PM