The Servotronik control unit M088 is supplied (pin 1) by the line controlled by the ignition (INT) protected by F49 of the junction unit under the dashboard B002.The speedometer signal, supplied by the braking system control unit M051, reaches pin 7 of connector A of the Body Computer M001 and is repeated, in turn, at pin 2 of the Servotronik control unit M088.The Servotronik solenoid valve L070 is connected to the control unit M088 at pin 5 (postive signal) and pin 6 (negative signal).The instrument panel E050 is supplied, at pins 2 and 1 of connector A, by the line from the battery protected by fuse F53 and by the line controlled by the ignition (INT) protected by fuse F49, both housed in the junction unit under the dashboard B002.