LED Light Bar Connection: With a set of light output connectors, the wiring harness can connect two LED lights within 300W at the same time. Fuse: The entire wiring harness with an in-line fuse, serves as the first line of defense against overvoltage, overload and short circuit. Safe Power Relay: Adopted premium materials, power relay plays an important role in safety protection and circuit conversion. Effectively protect the circuit and lighting system. On/Off Switch: It is designed for easy control of the LED lights and is also very convenient to use. Easy Installation: This harness is flexible and long enough for assembly. Easily connect any lighting fixture to its power source by tapping the battery directly.