GMC C1500 700R4 Electrical, Lighting and Wiring Parts

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GMC C1500

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GMC C1500

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Electrical, Lighting and Wiring

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700R4

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700R4 Transmission Complete Guide | Diagrams, HP Ratings, FAQ

700R4 Transmission Complete Guide | Diagrams, HP Ratings, FAQ

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The 700R4 is a great choice when it's time to upgrade your classic car or truck with an overdrive transmission. Here's what you need to know about GM's famous 4-speed automatic.

Headlight & Taillight Wiring Diagram

Headlight & Taillight Wiring Diagram

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Check out this headlight wiring and taillight wiring diagram.

Custom Battery Box and Cables

Custom Battery Box and Cables

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Speedway Motors employee Jess M. talks about the custom battery tray and cables she built for her '33 Ford.

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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