1978 GMC K35 Electrical, Lighting and Wiring Parts

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1978 GMC K35

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Headlight & Taillight Wiring Diagram

Headlight & Taillight Wiring Diagram

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Check out this headlight wiring and taillight wiring diagram.

Steering Column Wiring Guide

Steering Column Wiring Guide

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Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.

Wiring Harnesses for a 1929 Ford

Wiring Harnesses for a 1929 Ford

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In this Tech Tip, a returning customer asks for advice on wiring harnesses for his ’29 Ford roadster project.

Grounding the Electrical System

Grounding the Electrical System

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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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