The back light is installed at the rear of the car to illuminate the road behind the car, and warns the vehicles and pedestrians behind the car, indicating that the car is reversing, and all the back lights are white.
There are generally three types of backup lights: 1.P21W (1156) Flat angle single point
2. W16W (T15)
3. W21W (T20) monofilament
The car back light is installed at the rear of the car and is used to illuminate the road behind the car when reversing and to warn the vehicle and pedestrians behind the car.