The dual control switch for adjusting the mirrors H30 operates the two electric motors in the driver''s P60 and passenger P61 exterior rear view mirrors.The switch receives an ignition-controlled power supply (INT) from the line for fuse F49 located in the junction unit under the dashboard B02 at pins 7 and 8 of H30, whils pin 5 is earthed.Switch H30 (pin 8) is lit up with the ignition on (INT).Depending on the position of the selector, the driver''sr side motors (signals coming out of pins 1 and 3 of H30) or the passenger side motors (signals coming out of pins 2 and 4 of H30) are connected; the joint power supply leaves pin 6 of H30 and is connected to pin 5 of motors P60 and P61.Once the selector is set to the driver''s or passenger side mirror, the switch is activated in one direction or the other sending the motor the corresponding positive or earth signal thereby determining the direction of rotation.The motors that adjust the vertical position are connected to pin 4 of P60 and P61, those that adjust the horizontal position to pin 3.