Door lights that project the Mazda logo. - Brand: Mazda - Type: Door Light - Features: Logo projection function Thank you for viewing. I am selling these because I couldn't install them after changing cars. Thank you. Please replace the double-sided tape if it's in poor condition. Although unused, I did use them to check the lights' operation. This product is a light that projects the logo onto the ground when the car door is opened, illuminating your feet at night. The sensor keeps it off normally, and it automatically turns on when the door is opened. Each unit requires three AAA batteries. This is a set of four, which can be installed on the driver's seat, passenger seat, and rear seats. Installation: 1. Clean the installation area. 2. Attach the magnetic sensor to the car. 3. Install the main unit so that it is directly below the sensor. 4. Installation is complete if it lights up when the door is opened and turns off when the door is closed.