The switch for the reversing lights I20receives an ignition-controlled power supply (INT) from the line protected by fuse F35 of the junction unit under the dashboard B2.When reverse gear is engaged, the switch closes and sends a power supply to the reversing light F33, directly via junction unit B2pin 8 connector D.The reversing light activation signal is sent to the Body Computer M1pin 3 of connector F and from there, via the CAN line, to the navigator node See E4091 CONNECT. and to the parking control unit See E3090 PARKING SENSOR.