Factory Fit® is American Autowire's OEM and Restoration division. We offer all

you need for your OEM project - Wiring Harnesses, Switches, Battery Cables, and Spark Plug Wire Sets. Whatever you buy, you can always count on the four S’s of Factory Fit.

Selection
Factory Fit® catalogs over 10,000 quality OEM wiring harnesses and parts built to demanding specifications that are sure to please any restoration enthusiast or concourse judge.

Speed
Factory Fit® wiring harnesses are built using OEM blueprints and original GM parts, assuring you our trademark "plug and play experience". Save time and money!

Specific
Manufactured for the discriminating restoration enthusiast. Factory Fit® ensures you have the correct wiring, connectors, clips, lamp sockets, tapes, and more. Also included in the Factory Fit® line are OEM harnesses that include standard modifications such as; internal regulator, one-wire alternator, HEI, and more. Our dedication to the details gives you the right fit every time.

Support
Every Factory Fit® wiring harness has the benefit of over 60 years of experience built into it, producing the best possible product on the market today. When it’s time to install your wiring harness, you won’t be alone! Our technical support staff is only a phone call or an email away if you have a question.

Factory Fit® proudly offers products in
four major categories:
Click on the links below for more info, or click the "Download Catalog" link to the left to download sections of the Factory Fit® catalog by make/model/year.
OEM Restoration Wiring Harnesses
Switches
Battery Cables
Spark Plug Wire Sets

Now available on the webstore - a step-by-step guide to purchasing everything you need to completely re-wire your restoration vehicle. Fill out the form, submit it to us, and receive a call from our E-commerce manager with a price quote! We make wiring THAT easy!
WIRE your ENTIRE car!