1969-72 Chevy Truck Classic Update Wire Harness Kit 1969-72 Chevy Truck Classic Update Wire Harness Kit Tweet. Product Videos. 1969-1972 Chevy C10-C20 Truck Classic Update wiring kit by American Autowire replaces old outdated original wiring with total vehicle updated wiring to support modern electronics Instrument Cluster wiring is designed with a "cluster harness disconnect" system for chevy c10 wiring harness | eBay Find great deals on eBay for chevy c10 wiring harness. Shop with confidence. Skip to main content. eBay Logo: AAW # 510089 1969 - 1972 Chevy C10 Pick Up Truck Harness (Fits: Chevrolet C10 Pickup) Brand New. 5.0 out of 5 stars. 1 product rating - AAW # 510089 1969 - 1972 Chevy C10 Pick Up Truck Harness.