gmc truck wiring harness | eBay www›Search›gmc truck wiring harnessFind great deals on eBay for gmc truck wiring harness. Shop with confidence. Skip to main content. eBay Logo: 1950 1951 1952 Wiring Harness Chevy GMC Truck with a Generator See more like this. 1953 1954 1955 Wiring Harness Chevy GMC Truck with a Generator 53 54 55. Brand New. $276. Wiring Harnesses for Classic Chevy trucks and GMC trucks Wiring harnesses, wiring harness clips, and obsolete parts for classic Chevy trucks and GMC trucks from Classic Parts of America.