The dipped headlamps activation (earth) signal - and any AUTO function is sent to pin 2 of connector I of the Body Computer M1 from the steering column switch unit H5 See E2011 DIPPED HEADLAMPS.The Body Computer M1 controls the supply for the dipped headlamps sending an earth signal to the junction unit under the dashboard B2 from pin 8 of connector F of M1 which energizes relay T1: the latter supplies the dipped headlamps - pin 1 for the lamps F10 (left) and F11 (right); at the same time it provides the enablement for the adjustment motors - pin 7 for lamps F10 (left) and F11 (right);Each circuit is protected by a fuse for the junction unit B2F13 for the left headlamp and F12 for the right.The control for the headlamp ajustment, located in the controls to the left of the steering wheel. H91, sends a modulated control signal each time the "+" or "-" buttons are pressed to the instrument panel E50, pin 14 of connector B. The internal logic for E50 which manages the function consequently sends a proper control signal for the motors from pin 7 of connector A, whilst pin 8 receives the enablement signal (dipped headlamps on).These control signals "pass through" the junction unit under the dashboard - pin 1 of connector A of B2 and activate the motors - pin 6 of the headlamps F10 (left) and F11 (right).