Note: The trunk light draws power from the electric tailgate switch, so this product can only be installed on BYD Sealion 8/Atto 8 models equipped with an electric tailgate switch. A light for the tailgate that comes on and off automatically as the tailgate is opened and closed. Low energy consumption, high brightness, light up any dead corner of your boot, say goodbye to grey inside the car. Docking with the original car plug, easy to install, no need to disconnect the wire, long service life.