Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 235
right rear door is standard equipment on wagon mod-
els. The sliding and rear door jamb switches are not
available for van models.
• Entry/Exit Lamp - An entry/exit lamp to illu-
minate each front and sliding side door step well is
optional equipment on wagon models.
• Time Delay Relay - Vehicles equipped with the
optional remote cargo lamp switches also have a time
delay relay located in the electrical center within the
driver side front seat riser.
Hard wired circuitry connects the interior lighting
system components to the electrical system of the
vehicle. These hard wired circuits are integral to sev-
eral wire harnesses, which are routed throughout the
vehicle and retained by many different methods.
These circuits may be connected to each other, to the
vehicle electrical system and to the interior lighting
system components through the use of a combination
of soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
OPERATION
The interior lighting systems can be divided into
two general classifications based upon the circuit
that controls their operation: The interior lighting
circuit, or the exterior lighting circuit. The hard
wired circuits and components of the interior lighting
systems may be diagnosed and tested using conven-
tional diagnostic tools and procedures.
INTERIOR LIGHTING CIRCUIT
Depending upon the vehicle model (van or wagon)
and the selected vehicle options the interior lighting
circuit may include dome/cargo lamps located over-
head in the front and rear of the vehicle, a dome/
reading lamp located in the header area above the
windshield between the sun visors, and entry/exit
lamps located in the front and sliding side door step
wells.
WAGON MODELS
In all wagon models, the lamps in the interior
lighting circuit are provided with battery current at
all times by a fuse in the fuse block beneath the
steering column. The front, side, and rear door jamb
switches control a ground path for each of these
lamps, except for the optional reading lamp. If the
lamp has an optional integral switch, that switch has
three separate positions. The first position provides a
ground path independent of the door jamb switches
to turn the lamp On. The second, or center position
allows the door jamb switches to control the lamp.
The third position segregates that lamp from the
door jamb switch input, turning the lamp Off. In the
case of the optional dome/reading lamp, the integral
lamp switch has a fourth position which will illumi-
nate only the reading lamp bulb.
VAN MODELS
Unless a van model is equipped with an optional
remote cargo lamp switch, all of the lamps in the
interior lighting circuit operate the same way as the
wagon models except that there are only two door
jamb switches, one for each front door. If the vehicle
is equipped with an optional remote cargo lamp
switch, the lamps in the rear of the vehicle on the
interior lighting circuit are provided with battery
current by the time delay relay. The time delay relay
is a smart relay containing active electronic elements
that comprise an electronic timer logic circuit. When
the remote cargo lamp switches provide the proper
input to the time delay relay, the relay logic responds
by energizing the relay control coil. The energized
relay control coil provides battery current to all of
the lamps on the rear interior lighting circuit and to
the indicator Light-Emitting Diode (LED) units in
the remote cargo switches causing each to illuminate.
If a remote cargo lamp switch remains On for more
than about fifteen minutes, the time delay relay will
then automatically de-energize the rear interior
lighting circuits until the remote cargo lamp switch
is cycled Off and then back On.
EXTERIOR LIGHTING CIRCUIT
The exterior lighting circuit provides battery cur-
rent to the optional ash receiver/cigar lighter lamp
and to the illumination Light-Emitting Diode (LED)
unit within the remote cargo lamp switch in the
instrument panel accessory switch bezel whenever
the exterior lamps are turned On.
SPECIFICATIONS - INTERIOR LIGHTING
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LAMPS/LIGHTING - INTERIOR
8L - 29
BULB SPECIFICATIONS
LAMP
BULB
Cargo/Dome Lamp
K - 12V 18W
Dome/Reading Lamp
K - 12V 10W
Dome Lamp w/Intrusion
Sensor
K - 12V 6W
Entry/Exit Lamp
W5W - 12V 5W
ASH RECEIVER / CIGAR
LIGHTER LAMP UNIT
REMOVAL
An ash receiver/cigar lighter lamp unit is optional
equipment on this model (Fig. 1). The bulb and bulb
holder are secured by an integral mount to the out-
side of the cigar lighter halo ring, and serves to illu-
minate both the translucent halo ring and the ash
receiver. A small lens that is snap-fit into the inboard
side of the ash receiver bin allows light from the
lamp on the halo ring to also illuminate the ash
receiver. The ash receiver/cigar lighter lamp is ser-
viced only as a unit with the ash receiver housing
and cigar lighter receptacle. If the lamp is faulty or
damaged, the entire ash receiver housing and cigar
lighter receptacle unit must be replaced. (Refer to 23
- BODY/INSTRUMENT PANEL/ASH RECEIVER -
REMOVAL).
INSTALLATION
An ash receiver/cigar lighter lamp unit is optional
equipment on this model (Fig. 1). The bulb and bulb
holder are secured by an integral mount to the out-
side of the cigar lighter halo ring, and serves to illu-
minate both the translucent halo ring and the ash
receiver. A small lens that is snap-fit into the inboard
side of the ash receiver bin allows light from the
lamp on the halo ring to also illuminate the ash
receiver. The ash receiver/cigar lighter lamp is ser-
viced only as a unit with the ash receiver housing
and cigar lighter receptacle. If the lamp is faulty or
damaged, the entire ash receiver housing and cigar
lighter receptacle unit must be replaced. (Refer to 23
- BODY/INSTRUMENT PANEL/ASH RECEIVER -
INSTALLATION).
CARGO / DOME LAMP BULB
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cargo/dome lamp unit from its
mounting location, but do not disconnect the vehicle
wire harness from the lamp connector receptacle.
(Refer to 8 - ELECTRICAL/LAMPS/LIGHTING -
INTERIOR/CARGO/DOME
LAMP
UNIT
-
REMOVAL).
(3) Grasp the lamp housing in one hand and care-
fully pull the bulb out of the bulb holder with the
other hand (Fig. 2).
INSTALLATION
(1) Grasp the cargo/dome lamp housing in one
hand and carefully insert the bulb into the bulb
holder with the other hand (Fig. 2).
(2) Reinstall the cargo/dome lamp unit into its
mounting location. (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING
-
INTERIOR/CARGO/DOME
LAMP UNIT - INSTALLATION).
(3) Reconnect the battery negative cable.
Fig. 1 Ash Receiver/Cigar Lighter Lamp Unit
1 - CIGAR LIGHTER
2 - HALO RING
3 - LENS
4 - LAMP UNIT (BIN REMOVED)
5 - ASH RECEIVER BIN
6 - ASH RECEIVER
Fig. 2 Cargo/Dome Lamp Bulb Remove/Install
1 - LAMP HOUSING
2 - BULB
3 - CONNECTOR RECEPTACLE
8L - 30
LAMPS/LIGHTING - INTERIOR
VA
CARGO / DOME LAMP UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Insert the tip of a small flat-bladed screwdriver
into the notch on one edge of the cargo/dome lamp
housing to depress the retainer clip and pull that
edge of the lamp away from its mounting location
(Fig. 3).
(3) Pull the cargo/dome lamp unit from its mount-
ing location far enough to access and disconnect the
vehicle wire harness from the lamp connector recep-
tacle.
(4) Remove the cargo/dome lamp unit from its
mounting location.
INSTALLATION
(1) Position the cargo/dome lamp unit to its
mounting location.
(2) Reconnect the vehicle wire harness connector
to the cargo/dome lamp connector receptacle (Fig. 3).
(3) Position the edge of the cargo/dome lamp hous-
ing opposite from the retainer clip into the mounting
hole.
(4) Push firmly and evenly on the notched edge of
the cargo/dome lamp housing until the retainer clip
latches into place.
(5) Reconnect the battery negative cable.
CARGO LAMP SWITCH
REMOVAL
REMOVAL - INSTRUMENT PANEL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the accessory switch bezel from the
instrument panel. (Refer to 23 - BODY/INSTRU-
MENT
PANEL/ACCESSORY
SWITCH
BEZEL
-
REMOVAL).
(3) From the back of the accessory switch bezel,
disconnect the vehicle wire harness connector for the
cargo lamp switch from the receptacle on the back of
the switch (Fig. 4).
(4) From the back of the accessory switch bezel,
depress the two latches on the outside of the switch
body and push the switch out through the front of
the bezel.
REMOVAL - BULKHEAD
(1) Disconnect and isolate the battery negative
cable.
(2) Carefully pry the cargo lamp switch and switch
bezel out of the switch box on the back of the cargo
compartment bulkhead panel.
(3) Pull the cargo lamp switch and bezel away
from the switch box far enough to access and discon-
nect the vehicle wire harness connector for the
switch from the receptacle on the back of the switch.
(4) From the back of the switch bezel, depress the
two latches on the outside of the cargo lamp switch
body and push the switch out through the top of the
switch bezel.
REMOVAL - REAR PILLAR
(1) Disconnect and isolate the battery negative
cable.
(2) Carefully pry the cargo lamp switch and switch
bezel out of the switch mounting hole on the inside of
the rear door opening pillar.
Fig. 3 Cargo/Dome Lamp Unit Remove/Install
1 - LAMP HOUSING
2 - SWITCH BUTTON
3 - NOTCH
Fig. 4 Cargo Lamp Switch - Accessory Switch Bezel
Mounted Remove/Install
1 - SWITCH (TYPICAL)
2 - ACCESSORY SWITCH BEZEL
3 - BLOCK-OUT PLATE
4 - LATCH (2)
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LAMPS/LIGHTING - INTERIOR
8L - 31
(3) Pull the cargo lamp switch and bezel away
from the pillar far enough to access and disconnect
the vehicle wire harness connector for the switch
from the receptacle on the back of the switch.
(4) From the back of the switch bezel, depress the
two latches on the outside of the cargo lamp switch
body and push the switch out through the top of the
switch bezel.
INSTALLATION
INSTALLATION - INSTRUMENT PANEL
(1) From the front of the accessory switch bezel,
align the cargo lamp switch body with the opening in
the bezel and push the switch into the bezel until the
two latches on the outside of the switch body snap
into place (Fig. 4).
(2) From the back of the accessory switch bezel,
reconnect the vehicle wire harness connector for the
cargo lamp switch to the receptacle on the back of
the switch.
(3) Reinstall the accessory switch bezel onto the
instrument panel. (Refer to 23 - BODY/INSTRU-
MENT
PANEL/ACCESSORY
SWITCH
BEZEL
-
INSTALLATION).
(4) Reconnect the battery negative cable.
INSTALLATION - BULKHEAD
(1) From the front of the switch bezel, align the
cargo lamp switch body with the opening in the bezel
and push the switch into the bezel until the two
latches on the outside of the switch body snap into
place.
(2) Reconnect the vehicle wire harness connector
for the cargo lamp switch to the receptacle on the
back of the switch.
(3) Using hand pressure, firmly and evenly press
the cargo lamp switch and switch bezel into the
switch box on the back of the cargo compartment
bulkhead panel.
(4) Reconnect the battery negative cable.
INSTALLATION - REAR PILLAR
(1) From the front of the switch bezel, align the
cargo lamp switch body with the opening in the bezel
and push the switch into the bezel until the two
latches on the outside of the switch body snap into
place.
(2) Reconnect the vehicle wire harness connector
for the cargo lamp switch to the receptacle on the
back of the switch.
(3) Using hand pressure, firmly and evenly press
the cargo lamp switch and switch bezel into the
switch mounting hole on the inside of the rear door
opening pillar.
(4) Reconnect the battery negative cable.
DOME / READING LAMP BULB
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the dome/reading lamp unit from its
mounting location, but do not disconnect the vehicle
wire harness from the lamp connector receptacle.
(Refer to 8 - ELECTRICAL/LAMPS/LIGHTING -
INTERIOR/DOME/READING
LAMP
UNIT
-
REMOVAL).
(3) Grasp the lamp housing in one hand and care-
fully pull the bulb out of the bulb holder with the
other hand (Fig. 5).
INSTALLATION
(1) Grasp the dome/reading lamp housing in one
hand and carefully insert the bulb into the bulb
holder with the other hand (Fig. 5).
(2) Reinstall the dome/reading lamp unit into its
mounting location. (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING - INTERIOR/DOME/READING
LAMP UNIT - INSTALLATION).
(3) Reconnect the battery negative cable.
DOME / READING LAMP UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Insert the tip of a small flat-bladed screwdriver
into the notch on one edge of the dome/reading lamp
housing to depress the retainer clip and pull that
edge of the lamp away from its mounting location
(Fig. 6).
Fig. 5 Dome/Reading Lamp Bulb Remove/Install
1 - LAMP HOUSING
2 - CONNECTOR RECEPTACLE
3 - BULB (2)
8L - 32
LAMPS/LIGHTING - INTERIOR
VA
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