Carviya Waterproof Double 5v Dual USB Phone GPS Charging 12v Motorcycle Cigarette Lighter Integration Motorbike Power Port Socket Charger with Switch Handlebar Bracket Mount Built in Fuse Easily installed in any 12V vehicle motorcycle, ATV, Boat Great add-on kit for motorcycle & ATV. Can be used as GPS charging, cell phone charger, MP3 power supply. Connect the red wire to the brass post & connect black wire to the silver one. With fuse built-in the red wire for safety. Waterproof cigarette lighter and USB port integration, unique design for installation , USB waterproof cover