Select Your Vehicle

Select by Brand

Get Email Exclusives

Sign up for email updates on the latest exclusive offers

Chassis Wire Harness

 Shop Chassis Wire Harness

There comes a time in every car owner's life when he feels that he has to let go of his vehicle. Maybe you're at this crossroad right now and you feel like your good old ride just isn't working like the way it did before. But does it really have to be this way? Do you really have to change your vehicle and spend thousands to buy a new one? Today, there are actually a lot of ways to jazz up your old ride to make it feel like brand new again. And this is not only limited to your car's outside appearance because it's now also possible to tinker and upgrade its inner workings. If you've heard about replacing a car's chassis wire harness, then you might get the picture. Replacing this will definitely go a long way in upgrading your vehicle. Here's a quick and basic guide on chassis wire harnesses that you might find useful.


A chassis wire harness is typically designed to cater to four major groups in your vehicle and these are the following:

  • Headlight
  • This set includes wires for the lighting assemblies and other components installed in front of your vehicle like the headlights, horn, windshield washer motor, etc.

  • Dash
  • This set includes wires for several components in your dashboard like your windshield wiper motor, indicator lights, etc.

  • Engine
  • This set includes wires that are connected to the components near the engine such as the starter solenoid, generator, alternator, air conditioning, etc.

  • Rear
  • This set includes wires that are reserved for components at the back of your vehicle like tail lights, left and right turn signals, brake lights, fuel sender, etc.

    Chassis Wire Harness Removal Tips

    • Before removal or installation of your new harness, make sure you've disconnected your battery's negative or positive cable to avoid getting electrocuted.
    • When removing the vehicle's old harness, remember to be extra cautious. Avoid making unnecessary cuts to the wires and do not throw the old set right away because you might be able to use some of its old pigtails and connector housings.
    • During the removal process, it would be best to document and label everything so that you'll have a guide when it's time to install the new set of wires.

    Chassis Wire Harness Installation Tips

    • If you get confused at any point during the installation process, remember that there are four words to remember as guide: mount, route, cut, terminate. The process always starts with mounting the fuse block of a specific wire group. Then after that comes the routing of the wires. Next is cutting off the excess wires, and last is terminating the wires to prevent accidents.
    • When routing the harness, make sure you keep it away from any potential damage-causing elements like sharp edges, exhaust pipes, and door hinges.
    • After installing the new chassis wire harness, terminate unused or unconnected wires using tape or insulated terminals to prevent harness failure, wire shorting, or fire.