An ignition operated power supply (INT) from instrument E50 reaches pin 1 of connector A through body computer M01, pin 31 connector F, from a line protected by fuse F37 of under-dashboard junction unit B02.Instrument E50 is also supplied directly from the battery - pin 3 of connector A - (for Natural Power version - 1596 16V BPW - pin 2 of connector A) via the body computer, pin 3 of connector D, from a line protected by fuse F53 contained in under-dashboard junction unit B02.Body computer M01 and control panel E50 communicate with one another to exchange information on the correct operation of the devices present in the vehicle respectively from pins 5 and 6 of connector D and pins 9 and 8 of connector A (for the Natural Power version - 1596 16V BPW - pins 3 and 4 of connector A).The instrument panel is also earthed via the body computer, from pin 2 connector A (for the Natural Power version - 1596 16V BPW - pin 7 of connector A).Activation of the leds inside the instrument panel is controlled directly by body computer M01 on the basis of signals from ignition switch H01: pin 2 connector B of the ignition switch carries the igntion-operated supply line (INT) while pin 3 connector B carries the "ignition-operated" line (POS) when the stalk is operated to turn on the side lights.