[PDF] Rear Lights - How to route the wiring loom from the light will show how to route the wiring loom from the light switch in the dash to the work light and tail light mounted on the rear fender: What is needed is the original type Ford pliers to open up wide enough and still be able to close sufficiently. This is how the pliers from a Ford tractor tool kit hold the clamp, with the tongue of the Amazon: ford tractor wiring harness Nilight LED Light Bar Wiring Harness Kit 12V On Off Switch Power Relay Blade Fuse for Off Road Lights LED Work Light,2 years Warranty. 4.3 out of 5 stars 625. Ford Tractor Main Wiring Harness - fits Series 2000 3000 4000 US Diesel Tractors '65-74 incl. Industrial Loader/Backhoe.