Description: This product is suitable for LED headlights, LED daytime running lights. 100% Brand new and high quality Mini shape,light weight and waterproof Fit for all Brand of cars SImple installation,with no need to change any electric line . Intelligent Start Up:when the car is started (the voltage must be higher than 13 V +), the daytime running lights are switched on automatically. When the headlights (or reading lights) are switched on, the daytime running lights are dimmed (darkened), Time-lapse Power off Function:when the car is switched off (the voltage must be lower than 12.5 V), the daytime running lights are off after 15 seconds. Specifications: Color: Black Material: ABS Size: 5 x 2.8 x 1.4cm(L x W x H) Weight: 30g Voltage: 12-18V Working current: 5A time-lapse power off: 15s Wiring Instruction: The red and black wire (the end with a fuse) are connected directly to the car battery + & - . The red wire goes to positive pole of the LED daytime running lights, the black wire of the output end is to goes to the negative pole of the daytime running lights. The White wire is to connect to the headlights (or dashboard lights), when headlights or dashboard lights are turned on, the brightness of the LED daytime running lights will be halved. Package contents: 2 x daytime running lights controller