1. and high quality 2. Mini shape,light weight and waterproof 3. Fit for all of cars 4. Time-lapse power off function 5. Constant light + dimming + delay + automatic switch Simple installation,with no need to change any electric line Voltage: 12-18V Working current: 3A Time-Lapse Power Off: 15s The Scope of Products: 1. The starting voltage is 13V+, and the flameout voltage is lower than 12.5V (if it is higher than this value, it be extended for a few minutes until the voltage .) 2. First connect the positive and negative side of the daytime running lights on the left and right sides, and connect the negative poles first. 3. Connect the red and black wires of the input terminal with fuse on the controller to the positive and negative poles of the battery, and the red and black terminals of the output terminal to the positive and negative poles of the daytime running light. 4. Connect the yellow line on the controller to the positive pole of the headlight (or reading light). When the headlight (or reading light) is turned on, the brightness of the daytime running light be halved (darkened) to achieve the dimming function (yellow line) You can choose not to pick up, that is, give up this function, does not affect other uses). Colour:Black Material:ABS Package Contents: 1Pcs x Car LED Daytime Running Light Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.