Features: 1.Compact and portable styling, it is waterproof and convenient to carry. 2.Easy installation, no need to change electrical line. 3.Suitable for all car models, it has a delay function for dimming. 4.Smart controller design, which features functions of constant light, dimming, delay and automatic switch. 5.Made of high quality ABS material, anti-corrosion and high strength for maximum durability. Specification: Condition: 100% Brand New_x000D_ Item Type: Daytime Running Light Controller_x000D_ Material: ABS_x000D_ Color: As Pictures Shown_x000D_ Voltage: 12-18V_x000D_ Operating Current: 3A_x000D_ Scope of Application:_x000D_ 1. The starting voltage is 13V +, and the flameout voltage is lower than 12.5V (if it is higher than this value, it will be extended for several minutes until the voltage drops, and then the lamp will be off)_x000D_ 2. The total power of 1 pair of daytime running lamps shall not exceed 18W (the total power of most daytime running lamps shall not exceed)_x000D_ _x000D_ Wiring Mode:_x000D_ 1. First connect the positive pole and negative pole of the left and right daytime running lamps_x000D_ 2. Connect the red wire and black wire of the input terminal with fuse on the controller to the positive and negative pole of the battery, and the red wire and black wire of the output terminal to the positive and negative pole of the solar lamp_x000D_ 3. Connect the yellow line on the controller to the positive pole of the headlamp (or reading lamp) switch. When the headlamp (or reading lamp) is turned on, the brightness of the daytime running lamp will be halved (dimmed) to realize the dimming function (the yellow line can be selected not to connect, that is, the function will be abandoned without affecting other uses)_x000D_ _x000D_ Smart Work:_x000D_ When the car engine is started, the voltage reaches 13V +, and the daytime running light will be on automatically. When the car is turned off, the voltage is lower than 12.5V (not suitable for the car with the voltage higher than 12.5V after turning off), the daytime running light will be off automatically after a delay of 15 seconds, which is convenient for the lighting owner to go home and realize the function of delayed light off. Note: Just after the battery is connected, it is normal for the daytime running light to turn on for about 15s and then turn off the light (to realize the delay function). After that, you need to start the car. When the voltage reaches 13V +, you can start to work!