The DENALI switched power adapter connects to your BMW:s GPS power connector (on bikes with Nav preparation) to provide a CANbus safe, switched 12V power source for triggering a relay to power DENALI lights, PowerHubs or other electronic accessories. The pre-installed Posi-lock connector means you will not have to tap, pierce, cut, or solder any original wires. The BMW GPS power source is switched with the ignition, so it will provide power when your ignition is turned on and will shut down when your ignition is turned off. Please note that this accessory circuit on most BMWs is designed with a delayed time off, so your added accessories will reflect this same factory setting.