Classic Update Kit - 1967-72 Ford Truck We Make Wiring Instrument Cluster wiring is designed with a “cluster harness disconnect” system for easy service and assembly. Original terminals, lamp sockets, and connectors that will plug into the original cluster (another American Autowire exclusive) are provided for stock cluster connections. This 1967-1972 Ford F100-350 Truck Classic Update Kit Ford F100 Wiring Harness | eBay 1967–72 Ford F-Series truck. wiring harness update kit fits. standard turn signal flasher, hazard flasher and horn relay mounted on harness;. Flexibility in harness design allows for original or custo..