The integrated radio-phone-navigation system P20 is supplied directly (pin 7 of connector A) from the battery via a line protected by fuse F39 of underfacia control unit B2.Pin 4 of connector A receives the power supply from the INT line protected by fuse F49 of junction unit B2.Pins 1 and 3 of connector A receive the CAN line by which radio is connected to Body Computer M1 and the other system nodes: in this way the navigator module inside the CONNECT also receives information such as the speedometer signal, reverse gear, consumption, etc.Pin 8 of connector A is earthed.Cables carrying signals leave connector B of P20 for the speakers through which the voice messages are issued See E3510 RADIOThe built-in radio-phone-navigation system P20 is not connected directly to the controls on the steering wheel: the connection is via clock spring D47, which is a node on the CAN network See E1050 CAN CONNECTION LINESAerial P25 containing the GPS reception device is connected to the navigation system module by means of a special coaxial cable, from the radio function and from the phone function (GSM).