, , , , , ,,,, This simple auto switch will connect to any aftermarket DRLs allowing , them Dim by 30% brightness when you turn the headlights or sidelights , on, which complys with EU regulations to make them legal. i.e. Brightest , in the daytime only.,,,, Connects to any 12v DRLs without auto switch Function already installed,,, Comes with 2 wires to connect to DRLs,,, Follow me home function 25 second delay after turning engine off the , DRLs will turn off,,,,, Red with inline fuse = BATTERY + Terminal (This unit know when the car , is started!) ,,,, Black = Earth. Connect to Chassis or Battery Earth,,, Yellow = Trigger wire. Connect to power wire of the sidelight /parking , lights or headlights to dim the DRLs,,, ,,,,,,,