Off Road USA's wiring harness is your all-in-one, plug-and-play solution to make your life easy. Included in our wiring harness is the on/off switch, relay, needed wiring, and fuse. This will be everything you need for an easy install of your LED lights. Just connect to your light, connect to your battery, and you are done. This makes wiring your new light bar or light pods as easy as ever!