1979 GMC C1500 Electrical, Lighting and Wiring Parts

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Headlight & Taillight Wiring Diagram

Headlight & Taillight Wiring Diagram

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Are your gauges reading erratically or does your car run out of power at high rpm? It may be the cause of a bad ground. Speedway Motors can show you how to diagnose and fix the problem in no time at all!

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