Wiring harness from American Autowire will rewire truck from headlights to tail lights and is able to add many options and accessories. The new ATO style 18-fuse, 29-circuit fuse panel fits in the original location and requires no modifications to firewall. Easy-to-follow installation manual and mounting hardware are included.Harness is designed to accommodate truck's original switches and connections and work with many aftermarket components such as custom steering columns, electric fans, gauges, HEI distributors, stereos and more. The instrument cluster wiring disconnects from the main harness to assist service.Standard features include headlight connectors, parklight connectors, front harness grommets, dome light wiring, underdash courtesy light wiring, original style rear light sockets with weatherproof boots. A/C wiring harness is not included.Note: This harness will not work on 1973-75 models with factory ammeter. Does not include resistance wire for points ignition systems on 1973-74 models.