Power Train Harnesses

Modernize Your Favorite Classic Ride


Classic Wires, Inc. is here for you and your custom ride, all over the West Palm Beach, FL area! We want to help you get the car or truck of your dreams, on the inside as well as the outside, since you’ve recently had your classic, street, or hotrod full restored on the outside!


We offer a variety of modern powertrain harnesses to upgrade your classic car, from Holley, Fitech, PSI, BP muscle rods & more. This is a standalone fuse block and relay control system for the engine and transmission. For ease of installation, every connection in each of our harnesses is labeled and situated where it belongs.


These powertrain harness may or may not include a new computer as well depending on which harness you decide to go with to get your classic ride rumbling again. 

Most powertrain harness will work with the new LS swap conversions and fuel injected upgrades. We will conceal all wires and/or computer within the dash or body of your ride, which will leave a flawless installation. Come by the shop or gives a call today for any of your questions.


Ready to get started? Call Classic Wires, Inc. today, or reach out! We can’t wait to check out your favorite ride and see how we can improve wiring and modernize for optimal performance! 

Power Train Harness Services Include:


LS Swaps

Computerizing Motor

Computerizing Transmission

New Motor Wiring

New Transmission Wiring

Power Train Harness Diagrams


***COMING SOON*** 

Learn More Today!


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