A Set Of 2 BMW Door Ghost Light Logos gives your car a cool lightbox effect. These light logo gets installed on the side doors with an adhesive pad or a magnetic stick. It consumes very low power. The coolest feature is the auto light-up, it gets activated as soon you open the door. Specifications: Brand new and high quality! Easily install it yourself with the 3M adhesive sticker, no more trouble of making holes. Avoid getting off cars on bad roads, such as water marshlands. Auto light up with the door opening. Environmental, high power, high efficiency, energy-saving, no pollution, no noise, no electronic interface. Lighting is steady and constant, clear, and soft. Size:62*67*14mm Power Supply: 3x AAA battery (Not included in the package) Install Instruction For BMW Door Lights: 1. Install instructions about the batteries: Put 3 pcs AAA(1.5V) batteries in the battery case and install them according to the positive & negative as marked in the case. Then close the battery case. 2. Install instructions for the shadow light: Stick the Magnet on the bottom of the car frame. Stick the BMW door lights on the car door. The distance between the Magnet & Car light is about 10mm. When you close the car door, the Magnet is under the face of the sensor on the car logo light. 3. Automatic Control & Manual Control: When you open the door, the BMW door lights logo will be shown on the ground, and it will turn off automatically after 2 minutes. If you want the light on/off, just need to press the button on the head of the light. One set includes 2 pcs, suggest you buy 2 sets for 4 doors of your car! Package includes: 2x LED BMW door lights