ILM 2 in 1 Motorcycle Cell Phone Mount Holder with USB Charger Waterproof Accessories Includes phone holder, 1M cable, and screw and rubber gasket Step1: Tighten the screws and put the rubber gasket inside Step2: Press the button to open the holder and make phone fixed Step3: Connect the cable to motorcycle battery Connect red wire to battery positive port , black wire to battery negative port