Tech: Moss Wiring Harnesses – Moss Motoring Sep 27, 2013The replacement switch originally came with its own harness, when you were replacing the switch, but that switch now comes alone and would additionally require a harness. Hopefully this has answered quite a few of your questions about when to replace an entire wiring harness and why you might choose certain parts over others. Wiring Harness Repair Kits - Moss Motors Our Wiring Harness Repair Kit makes fast, secure wiring connections a snap. Just crimp a bullet to each wire end using the included Bullet Crimping Tool. Push bullet ends into the connector sleeve. Snap firmly into place with the Closing Tool for a permanent repair. It's that easy.