The dipped beam activation signal is sent to pin 4 of connector D of the Body ComputerM1from the stalk unitH5.The ''ignition ON'' signal (INT) for the switch H1 reaches the underdashboard control unitB2at pin 11 of connector H and from there moves on to the Body ComputerM1(pin 9 of connector F).The Body ComputerM1 controls the supply of the dipped headlamps sending an earth signal to the underdashboard control unit B2 - from pin 8 of connector F of M1 - which energizes the relay T1: this supplies the dipped headlamps F10 (left) and F11 (right).Each circuit is protected by a control unitB2fuse: F13 for the left headlamp and F12 for the right one.