The "MODE" "+" and "-" controls, located on the left steering column switch unit lever +15, send an analogue signal to the instrument panel E50 at pin 5 of connector A.The dimmed power supply for the auxiliary instruments E20 leaves pin 5 of connector C of E50 (pin 2 of connector C provides the reference earth).The Body Computer M1 is connected via the CAN line to the instrument panel E50 from which it receives the "brightness adjustment" signal which is transmitted to the radio node and to the climate control system control unit See E1050 CAN CONNECTION LINES The power supply with the side lights on is sent from the Body Computer M1 - pin 40 of connector E to the cigar lighter light P50 and the rear current socket P51 as well as to the controls on the front courtesy light G10.The lighting of the front door controls H44 and H50 is managed by the driver side door control unit M66 and passenger side door control unit M67 , supplied at pin 11 of connector D by a line protected by fuse F32 of the underfacia control unit B2 , and connected via the CAN line to the Body Computer M1 .Similarly, the lighting of the rear door controls H53 and H54 is managed by the boot control unit M63 , supplied - at pin B8 of connector A - by a line protected by fuse F36 of the underfacia control unit B2 , and connected via the CAN line to the Body Computer M1 .The ignition-controlled power supply line (INT), protected by fuse F35 of the junction unit under the dashboard B2, provides the lighting for the switch unit on the tunnel H35.The ignition-operated power supply line (INT), protected by fuse F49 of the junction unit under the dashboard B2, provides the lighting for the hazard warning lights control H20, the control panel to the left of the dashboard H90, the radio controls on the steering wheel D47, the controls on the rear courtesy light G20 and those on the seats I65 and I66.