Mercury Fuel Injector Wiring Harnesses

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

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

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.

This Chevelle project gets rewired with a Speedway Motors 22 Circuit wiring kit. Follow along as Jeff guides you through this application, starting with a good mounting location for the fuse box. Learn more on continuity, grounding and relays.

Speedway Motors just added some exciting new options to our line of racing harnesses.

Read about how important a clean fuel system is for your micro sprint. Learn how to clean and maintain the fuel system during race season.

How to replace sway bars in a Mercury Comet and the advantages that come with it.

Learn how to replace a fuel sending unit. Our fuel gauge sending unit guide and installation video covers all you need to match your fuel sender and gauge.

This video is a step-by-step guide on how to properly install a wrap-around 5 point harness seat belt. Joe and Kyle also talk about the benefits of the Speedway Motors 5 point harness seat belt combo.

Troubleshooting a fuel gauge can be a seriously aggravating issue. Click here for a video showing some hints and tips!