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

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

Speedway Economy 12 Circuit Wiring Harness

Read how to wire a lightning sprint engine. This detailed account of how to successfully wire an engine will ensure a smooth installation.

How to Wire a Lightning Sprint Engine

Learn how to replace the hinges on your vehicle. Follow along as our expert replaces the hinge pins and bushings on his 1976 Chevrolet Laguna S3 with a kit.

How To Replace Door Hinge Pins and Bushings

Follow along as we explain the benefits, results, and how to install under hood heat and sound insulation 1962 Chevy II.

How to Install Under Hood Insulation

Learn how to wire dual electric radiator fans. Use our dual fan wiring diagram and guide to make sure you properly wire your fans to your thermostat.

How to Wire Dual Electric Cooling Fans

Learn how to install spark plug wire terminal ends. Our step by step guide takes you through terminal end and boot installation with the use of a wire crimping tool.

How To Crimp Spark Plug Wires and Install Boots

A guide to choosing the right camshaft for your engine. See how to install a new LSR roller camshaft while upgrading valve springs and rocker trunnions.

LS Cam Swap

Learn how to install a side detent shifter in a 1969 Chevy C10.

How to Install Side Detent Shifter for GM TH200, TH250, TH350, and TH400

This handy adapter is an inexpensive way to adapt an LS into your classic, muscle car, or truck. It takes care of the steam line as well as the hose diameter difference, allowing you to run a standard radiator with your LS swap.

LS Swap Radiator Hose Adapter with Steam Port

Engine Family Facets

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Jeep Door Jamb Switch Wiring Harness Insulators

Jeep Door Jamb Switch Wiring Harness Insulators | Speedway Motors

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