The universal adapter allows you to connect the black box directly to the vehicle's on-board power supply without occupying the cigarette lighter socket. This ensures uninterrupted power supply of the black box during parking with the engine shut off. The length of the cable to the recorder is 3 meters, mini-USB connection. The black wire (grounding to the body) and the red wire (connection to the battery) are used for connection. It is best to connect to the fuse box, you can also connect the recorder to turn off when the ignition of the car is turned off.