This LED SMD light is manufactured by the latest technology. It has 9 SMD LEDs . It has high efficiency, low power consumption and long service life. It is a perfect replacement for Interior (Map, Dome, Cargo, Courtesy) Light, Parking Light, Turn Signal Light, License Plate Light, Corner Light, Side Marker Light, Tail Light, and Backup Lights, etc..Ideal for many other applications around the car.If they don't light after inserting into the socket, insert oppositely. You are getting a high quality unit with great looks and performance at a great price.Since the nature of the item being offered might fit a large variety of different vehicles and functions, please make sure this is the correct application type of bulb before you place an Order.