17 INTERIOR LIGHTING DAY/SLEEPER CAB
DRIVER’S SIDE STEPWELL LIGHTING,
INTERIOR LIGHTING AND DOOR SWITCH
When the door on the driver’s side is opened,
door switch E514 is activated (connection
between 1 - 2). A a result, there is a voltage
on C062, C063 and on D911 through fuse
E045 (interior lighting fuse), wire 1107,
contacts 1 - 2 of door switch E514, wire 2647,
diode D783 (driver’s side interior lighting
diode) and wire 2600. This activates the
stepwell lighting on both the driver’s side
(C062) and the co-driver’s side (C063). The
VIC (D900) also receives a voltage on
connection point 1, connector 595. The VIC
then turns on the cab lighting (C119/C192),
provided the switch is in the correct position,
activating it via connection point 4, connector
492.
When the door on the driver’s side is closed
(contacts 1 - 2 interrupted), the voltage to
connection point 1, connector 595 of the VIC
is lost. Connection point 4, connector 592 will
then continue to be supplied with power for
another 9 seconds approximately. After
approximately 9 seconds, the power supply is
switched off and the lights go out.
If the vehicle ignition is switched on (contact
made) within 9 seconds, the power supply to
connection point 4, connector 592 of the VIC
will be switched off immediately. The interior
lighting will be switched off immediately. If the
alarm system (D911) sends a voltage to
connection point 13, connector 594 of the VIC
to indicate that the doors have locked
correctly, the lighting will also go off
immediately.
CO-DRIVER’S SIDE STEPWELL LIGHTING,
INTERIOR LIGHTING AND DOOR SWITCH
When the door on the co-driver’s side is
opened, door switch (E515) is activated
(connection between 1 - 2).
As a result, there is also a voltage on both
C062 and C063 through fuse E045 (interior
lighting fuse), wire 1107, contacts 1 - 2 of door
switch E515 and wire 2600. This activates the
stepwell lighting on both the driver’s side
(C062) and the co-driver’s side (C063).
INTERIOR LIGHT WITH MAP-READING
LIGHT (DRIVER’S AND CO-DRIVER’S
SIDE)
A combined interior light and map-reading
light on both sides of the cab in the overhead
console. The lights operate in the same way
on the driver’s side and co-driver’s side.
A voltage is applied to connection point 2 of
C119 and C192 respectively through fuse
E045 and wire 1107. Depending on the switch
position, the interior light or the map-reading
light can be switched on individually or
together.
STORAGE COMPARTMENT LIGHTING
When the storage compartment is opened,
storage compartment light switch E528 is
activated (connection between 1 - 2). As a
result, there is a voltage on C067 through fuse
E142 (accessories before ignition fuse), wire
1154, contacts 1 - 2 of storage compartment
light switch E528 and wire 2608. This
switches on the storage compartment light.
The storage compartment light works
independently of the ignition.
BUNK LAMP
The bunk lamp C115 is switched on by a
switch in the light fitting. The bunk lamp works
independently of the ignition. Voltage is
applied to connection point 1 of C115 through
fuse E045, wire 1107. When the switch is
operated (connection between contact 1 - 2),
connection point 2 is connected to earth. The
lamp will now switch on.
INTERIOR NIGHTLIGHT
When switch C735 (interior nightlight switch )
is operated (connection between 5 - 1), a
voltage is applied to C191 through fuse E045
(interior lighting fuse), wire 1107, contacts 5 -1
of nightlight switch C735 and wire 2617. This
switches the nightlight on. The nightlight
works independently of the ignition.
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