Specification:Condition: 100% brand newColour: BlackRelay: 12V 40ALED Switch: DC 12V 20A / DC 24V 10A (CE Approved)Switch Pin Number: 5Fuse: 30AWattage: Up to 300WFitment:All automobiles and devices equipped with a 10 to 30 Volt DC power source. Full Wiring Kit for All Light Bars with LASER ROCKER SWITCH ON/ OFF switch.Installation: (Just for reference)1. connect the the red+ wire from the fuse to battery +; connect the black wire from the reply to the battery -;2. connect the wire for lights bar from the relay; (red/black correspond to the wire of lights bar)3. connect the white +/black- wire of the switch to battery or any place of your car system to get power for the switch4. turn on on/off button of switch to test the lights barInstruction manual is not included, Professional installation is recommended.