GMC Jimmy Engine Wiring Harness - Wiring Harness - MSD Search our online engine wiring harness catalog and find the lowest priced discount auto parts on the web. We sell wholesale to the public. We offer high quality new, OEM, aftermarket and remanufactured GMC Jimmy Engine Wiring Harness parts. GMC Jimmy Wiring Harness | Auto Parts Warehouse We know car parts and we know auto parts. We're here to help you find that perfect Wiring Harness for your GMC Jimmy. We love when auto parts experts come to our site and we love when car parts newbies come to our site. We have worked hard to design a site that caters to everyones GMC Jimmy Wiring Harness needs.