The supply for all the courtesy lights arrives directly from the battery via the line for maxifuse CENTR of B5 and fuse F17 of junction unit B1 .
The interior lights G10 (front) and G25 and G26 (rear) are switched on - depending on the positions of their internal switch - by an earth signal which is direct (permanently on) or timed.
However, the lights on the doors (front left G51 , front right G52 , rear left G55 and rear right G56 ) only ever come on for a timed period.
The timed period is managed by the special courtesy lights relay J42 , supplied directly by the battery via the line for maxifuse CENTR of B5 and protected by fuse F17 of junction unit B1 .
The timed period is operated by the instrument panel E50 , which sends the signal (from pin 11 of connector B to pin 85 of timer J42 ) as soon as at leas one of the doors is opened via switches N50A , N51B , N55 and N56 , connected to pins 14, 15, 16 and 17 of connector B of E50 , respectively.
The timing is interrupted when the ignition 'on' signal is received, which reaches the instrument E50 from the ignition-operated line (INT/A) of the panel - pin 15 of connector A of E50 - through fuse F1 of junction unit B1 .
Timing starts from the beginning again if the doors are unlocked via the safety knob: these signals reach the instrument E50 - to pin 12 of connector B - through the switches on the knobs, located in N50A and N51A .
The timed period is also activated when the door locks are released using the key or the remote control.
J42 is located beneath the front tunnel.