The dipped beam activation signal is sent to pin 4 of connector D of the Body ComputerM1from the stalk unitH5.The Body ComputerM1controls the supply to the dipped beam headlamps, sending an earth signal to the unit under the dashboardB2- from pin 8 of connector F ofM1- which energizes the relay T1; this supplies the dipped beam headlamps and gives enablement to the headlamp adjustment motorsF10(left) andF11(right).The headlamp adjustment control, located in the unitH10, sends a control signal - when the relevant buttons are pressed - to the instrument panelE50- pin 11 of connector B: the internal logic of E50 then sends (with dipped beam lights on) the supply to the motors from pin 5 of connector A, while pin 6 of connector A receives the reference signal.