Notice! ! ! ! 1. The driver's seat needs 12v, and the auxiliary door and rear door of the car door have 6v to work normally. Just adjust the brightness button on the headlight switch. 2. There are 7 colors, and there are control buttons at the bottom of each block. 3. Make sure that the polarity of the wires is correct. 4. The buyer needs to modify it by himself, and it is recommended to find a professional to install it. Notice! ! ! ! Please make sure it is suitable for your model before buying If you are not sure, please contact us in time Suitable For Audi A3 S3 8V 2014-2019 (4 doors) Package includes: 4 pieces Material: ABS plastic Color: carbon fiber color