This 13 foot/4 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 inch-50 inch E-Series PRO, 20 inch-54 inch RDS-Series PRO.