You can use the USB port around the handle to charge your smartphone or power your navigation system. Fused wiring prevents overcurrent. Remove the power line from positive and negative Wire length is about 130cm. Note: When connecting to an accessory power supply, pay attention to other wirings, and use a separate connection terminal if necessary. Caution for Use: This product is for 12 V only. Always close the cap when not in use. This product is simple and waterproof. Infiltration may cause product and vehicle electrical damage. ·We cannot compensate for connected devices.