gets you a simple and powerful way to wire all of the electrical systems in your naturally aspirated drag car. Using OEM-tested multiplexing technology and circuit protection technologies, you can streamline all of your wire harnesses.

The INFINITYWIRE Drag Car kit comes with everything that you’d need to wire a naturally aspirated car. It is pre-configured to control lighting, ignition system, starter solenoid, fuel pump, cooling fan, trans-brake, line-lock solenoid and two extra auxiliary functions. All of the wiring required to wire the car is included in the kit plus the primary fusing to protect the power feeds.

More info

Speedwire Systems


At Speedwire Systems, our goal and vision is to refine and simplify vehicle chassis electrical control and installations, helping our customers to build consistent and reliable race-winning vehicles.

Our products allow racers to spend their time on their race program rather than debugging electrical issues.

We don’t just build electrical control systems, we race them with proven records. Whether you are building a new vehicle or want to upgrade your existing electrical system, Speedwire Systems has the solution for all your wiring needs.

Check out our products, find a local authorized dealer, or contact us if you have any questions.

How to Diagnose Electrical Ground Issues


Chasing down electrical gremlins in a motor vehicle can be an exercise in frustration—the kind of frustration that makes young men old and old men talk to themselves.

But many times, an electrical problem can be traced to a single source: a bad ground connection. A bad ground can cause noise in an audio system, make electric fuel pumps run hot or produce low pressure, and make electronic engine controls do weird things.

Read More 

Quick Tech: Tips for Choosing and Installing an Alternator

There are many factors to consider when purchasing an alternator.

Things like amperage, voltage, pulley ratio, and wiring all come into play. We’ve covered some of these topics in this earlier post; however, we still receive many questions about alternators from readers. So we teamed up with the tech experts at Summit Racing to get answers for some of the most common questions:

  • Why would I need to upgrade my alternator?
  • What aftermarket options are available?
  • What is a regulator and what’s the difference between internal vs. external?
  • How much wiring is involved?
  • How do I calculate pulley ratio and why is it important?

Check out the video below for those answers and more. We’ve also included some helpful charts, guides, and formulas below the video to help you figure out your required alternator output, wire gauge size, and overall alternator efficiency.

Read More 



Q: Is TXL wire the same as GXL w/a thinner insulation (polyethylene), or is one type better than the other, or does each type serve a specific purpose? I need to order a bunch of wire but not sure which one. Am I correct in thinking that the GXL is best for exterior areas, such as under the car, and that the TXL is better for interior and engine compartment?

A:  Read More