This 13 foot4 meter wiring harness is designed to connect a single LED light bar to your 12V electrical system. It features battery terminals on one end and a Deutsch connector on the other to connect to the light. It incorporates an inline fuse holder, a 12V relay, and a waterproof switch. This harness is compatible with the following RIGID LED Lights 40 in. - 50 in. E - Series PRO, 20 in. - 54 in. RDS - Series PRO.