Ampper 4 Lead LED Rock Lights Wiring Harness, LED Wiring Harness for LED Pods and Work Lights with Fuse 12V 40A Relay Waterproof On Off Rocker Switch 4 lead wiring harness: equiped with 4 sets of connectors, can be used to hook up 4 LED rock lights, LED work lights, LED pods and other offroad lights that less than 150 W (totally) at the same time. Safety protection: 40 A power relay and inline blade fuse for efficient circuit protection when overcurrent or short circuit occurs. 12 ft wiring harness: 12 ft strand copper harness is enough for normally use, PVC tube made prevent it from overheated, high temperature and melting. Power Switch: red illuminated indicator LED on the switch, durable waterproof power on/off toggle switch. Pls note: totally lights power should be less than 150W, professinal installation needed for this item, or may lead to short circuit. Check the 4 sets of terminals, ensure the sleeve work well and the terminals are insulating each other before connect the harness to power. Before connect the harness to power, please wrap all exposed wire with electrical tape to avoid a short circuit.