A guide on how to install a universal wiring harness in a car. Read tips on properly wiring taillights, headlights, gauges, ignition switch, steering column and more.

Universal Wiring Harness Instructions - Installation

Speedway Motors and Classic Trucks called on Painless Wiring to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.

Week to Wicked Product Feature: Painless Wiring Harness

In this Tech Tip, John answers a customer question about the Speedway 12 Circuit Wiring Harness.

Speedway Economy 12 Circuit Wiring Harness

Unbox our most popular wiring harness with Tim.

Speedway Tech Talk - Unboxing Wiring Harness Kits

Electrical wiring is one of those tasks that enthusiasts dread tackling on their own. We're here to tell you that wiring your project vehicle is something you can do with a little help from your friends at Speedway Motors!

The Best Wiring Solution for Your Hot Rod or Muscle Car Project

Learn how to install and wire a digital tachometer. Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer.

Tachometer Wiring (Digital)

The Day We Learned Wiring Is NOT For the Faint of Heart

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

GM Body Styles

Learn about the wiring of GM HEI Ignition Distributors with our diagrams and guide.  Ensure you are getting the best performance out of your ignition system.

GM HEI Ignition Distributor Wiring Diagrams and Guide

Are you a collector of automotive signs? This is a DIY project where you will learn how to convert a hardwired sign to a plug in. Jess M. explains each step to get the job done!

Converting a Hardwired Sinclair Sign to Plug-In

Engine Family Facets

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GM C-Body Data Logger Wiring Harnesses

GM C-Body Data Logger Wiring Harnesses | Speedway Motors

Shop GM C-Body Data Logger Wiring Harnesses and get Free Shipping on orders over $175 at Speedway Motors.

GM C-Body Data Logger Wiring Harnesses

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Holley Sniper 2 558-495 EFI CAN to USB-A Cable

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