2001 DODGE RAM bulb

CONDITION POSSIBLE CAUSES CORRECTION
HEADLAMP SWITCH ON
(HIGH BEAMS ON), ONE
HIGH BEAM ON AND
BOTH LOW BEAMS DIM.1. Headlamp feed circuit shorted to
ground.1. Check wiring circuit from right headlamp
fuse to headlamp. Repeat for left side.
Trace short circuit in wiring and repair.
HEADLAMP SWITCH ON,
ONE HEADLAMP
FILAMENT WILL BE AT
FULL INTENSITY AND ALL
OTHER FILAMENTS ARE
ON AND DIM.1. Blown headlamp fuse. 1. Trace short circuit and replace fuse.
2. Open circuit from headlamp fuse
to headlamp.2. Repair open headlamp circuit.
1. HEADLAMPS STAY ON
WITH KEY OUT (DRLM
EQUIPPED VEHICLES).1. Failed DRLM 1. Replace DRLM.
*Canada vehicles must have lamps ON.
REMOVAL
On the driver side, the battery and battery tray
must be removed to service the headlamp bulb.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the battery tray (Refer to 8 - ELEC-
TRICAL/BATTERY SYSTEM/TRAY - REMOVAL).
(3) Disengage wire connector from headlamp
bulb(s).
(4) Remove retaining ring holding bulb(s) to head-
lamp (Fig. 13).
(5) Pull bulb(s) from headlamp.
INSTALLATION
CAUTION: Do not touch the bulb glass with fingers
or other oily surfaces. Reduced bulb life will result.
(1) Position bulb(s) in headlamp.
(2) Install retaining ring holding bulb(s) to head-
lamp.
(3) Connect wire connector to headlamp bulb(s).
(4) Install battery tray, if removed (Refer to 8 -
ELECTRICAL/BATTERY SYSTEM/TRAY - INSTAL-
LATION).
(5) Connect battery negative cable.
HEADLAMP RELAY
DESCRIPTION
The headlamp (or security) relay is located in the
Power Distribution Center (PDC) near the battery in
the engine compartment (Fig. 14). See the fuse and
relay layout label affixed to the inside surface of the
PDC cover for headlamp relay identification and loca-
tion. The headlamp relay is a conventional Interna-
tional Standards Organization (ISO) micro relay.
Relays conforming to the ISO specifications have
common physical dimensions, current capacities, ter-
minal patterns, and terminal functions. The relay is
contained within a small, rectangular, molded plastic
housing. The relay is connected to all of the required
inputs and outputs through its PDC receptacle by
five male spade-type terminals that extend from the
bottom of the relay base. The ISO designation for
each terminal is molded into the base adjacent to the
Fig. 13 Headlamp Bulb
1 - BULB SOCKET
2 - BULB ASSEMBLY
3 - LOCK
4 - BULB RETAINING RING
5 - ELECTRICAL CONNECTOR
6 - UNLOCK
7 - PLASTIC BASE
8L - 16 LAMPS/LIGHTING - EXTERIORBR/BE
HEADLAMP (Continued)

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Position the headlamp switch to the instru-
ment panel.
(2) Reconnect the two instrument panel wire har-
ness connectors for the headlamp switch to the con-
nector receptacles on the back of the switch.
(3) Position the headlamp switch into the instru-
ment panel.
(4) Install and tighten the three screws that secure
the headlamp switch to the instrument panel.
Tighten the screws to 2.2 N´m (20 in. lbs.).
(5) Reinstall the cluster bezel onto the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
CLUSTER BEZEL - INSTALLATION).
(6) Connect the battery negative cable.
HEADLAMP UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove push-in fastener attaching seal to radi-
ator closure panel.
(3) Remove park and turn signal lamp.
(4) Remove screws attaching top of headlamp mod-
ule to radiator closure panel (Fig. 18).
(5) From behind front bumper, remove screws
attaching bottom of headlamp module to radiator clo-
sure panel.
(6) From behind the bumper, loosen the bumper
mounting nuts to allow the bumper to lower for
clearance. This is only necessary on the side to be
removed.
(7) Separate headlamp module from radiator clo-
sure panel.
(8) Disengage wire connector from headlamp
bulb(s) (Fig. 19).
(9) Separate headlamp module from vehicle.
INSTALLATION
(1) If removed, install headlamp bulb(s).
(2) Connect headlamp bulb wire connector(s).
(3) Position headlamp in radiator closure panel.
(4) From behind front bumper, install the screws
attaching bottom of headlamp module to radiator clo-
sure panel.
Fig. 18 Headlamp
1 - HEADLAMP SOCKET
2 - CARRIER BRACKET
3 - TURN AND PARK LAMP BULB
4 - TURN AND PARK LAMP HOUSING
5 - HEADLAMP HOUSING
6 - SCREW
Fig. 19 Headlamp-Sport
1 - HIGH BEAM BULB SOCKET
2 - PUSH-IN FASTENER
3 - SEAL
4 - HEADLAMP MODULE
5 - TURN/PARK LAMP MODULE
6 - LOW BEAM BULB SOCKET
7 - TURN/PARK LAMP BULB
8L - 20 LAMPS/LIGHTING - EXTERIORBR/BE
HEADLAMP SWITCH (Continued)

HEADLAMP ADJUSTMENT
Headlamps can be aligned using the screen method
provided or alignment tool C-4466±A or equivalent
can be used. refer to the instructions provided with
the tool for proper procedures.
A properly aimed low beam headlamp will project
top edge of high intensity pattern on screen from 50
mm (2 in.) above to 50 mm (2 in.) below headlamp
centerline. The side-to-side outboard edge of high
intensity pattern should be from 50 mm (2 in.) left to
50 mm (2 in.) right of headlamp centerline. (Fig. 20)
The preferred headlamp alignment is 1º down
for the up/down adjustment and 0 for the left/
right adjustment.The high beam pattern should be
correct when the low beams are aligned properly.
To adjust headlamp aim, rotate alignment screws
(Fig. 21) to achieve the specified high intensity pat-
tern.
LICENSE PLATE LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove license plate lamp lens.
(3) Pull bulb from license plate lamp.
INSTALLATION
(1) Install bulb in license plate lamp.
(2) Install license plate lamp lens.
(3) Connect the battery negative cable.
LICENSE PLATE LAMP UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove screws attaching license plate panel to
cargo box.
(3) Disengage license plate lamp wire connector
from body wire harness (Fig. 22).
(4) Separate license plate lamp from vehicle.
INSTALLATION
(1) Position license plate lamp in vehicle.
(2) Engage license plate lamp wire connector to
body wire harness.
(3) Install screws attaching license plate panel to
cargo box.
(4) Connect the battery negative cable.
MARKER LAMP
REMOVAL
Individual lamps may be replaced by removing the
lamp from the light bar. Using a flat blade screw-
driver, carefully pry lamp to disengage clips attach-
ing ID lamp to retainer.
Fig. 21 Aero Headlamp Alignment
1 - LEFT AND RIGHT ADJUSTMENT SCREW
2 - UP AND DOWN ADJUSTMENT SCREW
Fig. 22 License Plate Lamp Panel
1 - LIGHTING HARNESS
2 - BUMPER
3 - LICENSE PLATE LAMP
4 - SCREW
5 - LAMP PANEL
8L - 22 LAMPS/LIGHTING - EXTERIORBR/BE
HEADLAMP UNIT (Continued)

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Position the multi-function switch next to the
steering column.
(2) Reconnect the instrument panel wire harness
connector for the multi-function switch to the switch
connector receptacle (Fig. 27).
(3) Install and tighten the screw that secures the
instrument panel wire harness connector for the
multi-function switch to the switch connector recep-
tacle. Tighten the screw to 2 N´m (18 in. lbs.).
(4) Position the multi-function switch onto the
steering column.(5) Carefully lift the upper inner shroud upward
far enough to access the multi-function switch
mounting screws.
(6) Install and tighten the two tamper proof
screws (a Snap On tamper proof Torx bit TTXR20B2
or equivalent is required) that secure the multi-func-
tion switch to the steering column housing. Tighten
the screws to 2 N´m (18 in. lbs.).
(7) Position the lower inner shroud onto the steer-
ing column (Fig. 26). Be certain to insert the gear-
shift lever hider strip into the channel located on the
inside surface of the shroud.
(8) Align the locking tabs on the gearshift lever
side of the upper inner shroud with the receptacles
on the lower inner shroud and apply hand pressure
to snap them together.
(9) From below the steering column, install and
tighten the two screws that secure the lower inner
shroud to the steering column housing and the upper
inner shroud. Tighten the screws to 2 N´m (18 in.
lbs.).
(10) Position the lower outer shroud onto the
steering column.
(11) From below the steering column, install and
tighten the one center screw that secures the lower
outer shroud to the steering column housing. Tighten
the screw to 2 N´m (18 in. lbs.).
(12) Align the locking tabs on the upper outer
shroud with the receptacles on the lower outer
shroud and apply hand pressure to snap them
together.
(13) From below the steering column, install and
tighten the two outboard screws that secure the
lower outer shroud to the upper outer shroud.
Tighten the screws to 2 N´m (18 in. lbs.).
(14) If the vehicle is so equipped, reinstall the
lever into the tilt steering column adjuster on the left
side of the column. Turn the lever clockwise to screw
it into the adjuster.
(15) Reconnect the battery negative cable.
OUTBOARD IDENTIFICATION
LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a flat blade screw driver, carefully pry
lamp to disengage clips attaching ID lamp to retainer
(Fig. 28).
(3) Separate ID lamp from retainer.
(4) Disengage lamp bulb socket from lamp.
(5) Remove screws attaching lamp retainer to rear
fender.
(6) Separate retainer from rear fender.
Fig. 27 Multi-Function Switch Connector
1 - WIRE HARNESS CONNECTORS
2 - SCREW
3 - WIRE HARNESS CONNECTOR
4 - MULTI-FUNCTION SWITCH CONNECTOR RECEPTACLE
5 - WIRE HARNESS CONNECTOR
6 - CLOCKSPRING
7 - IGNITION SWITCH
8L - 28 LAMPS/LIGHTING - EXTERIORBR/BE
MULTI-FUNCTION SWITCH (Continued)

INSTALLATION
(1) Position retainer on rear fender.
(2) Install screws attaching lamp retainer to rear
fender.
(3) Engage lamp bulb socket to lamp.
(4) Position and press ID lamp in retainer.
(5) Connect the battery negative cable.
PARK/TURN SIGNAL LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove park and turn signal lamp.
(3) Rotate bulb socket 1/4 turn counterclockwise
and pull turn signal lamp socket from back of lamp.
(4) Pull park and turn signal lamp bulb from
socket.
INSTALLATION
(1) Install park and turn signal lamp bulb in
socket.
(2) Install park and turn signal lamp socket into
back of lamp.
(3) Install park/turn signal lamp.
(4) Connect the battery negative cable.
PARK/TURN SIGNAL LAMP
UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove screw attaching the park lamp to
headlamp module.
(3) Grasp lamp and pull forward to disengage clip
attaching park/turn lamp to headlamp module.
(4) Separate park lamp headlamp module.
(5) Rotate park/turn signal socket 1/4 turn
counter-clockwise and remove from back of lamp.
(6) Remove side marker socket from back of lamp.
(7) Separate park/turn signal lamp from vehicle.
INSTALLATION
(1) Install side marker socket from back of lamp.
(2) Install park/turn signal socket in back of lamp.
(3) Install park/turn signal lamp in vehicle.
(4) Install screw attaching the park lamp to head-
lamp module.
(5) Connect the battery negative cable.
TAIL LAMP
DESCRIPTION
There are two types of tail lamp modules used on
the Ram Truck. One type is integrated into the
pick-up bed, The other is a bracket mounted module
used on the Ram Truck Cab and Chassis. The Cab
and Chassis module is made up of a housing, lens,
and two bulbs. This type of module has license plate
illumination built into the lens. The integrated pick
up module contains a housing, lens, and two bulbs. A
dual filament bulb is used for tail, stop, and turn sig-
nal operations. A separate bulb is used for back-up
illumination.
OPERATION
Tail lamp functions are controlled by the headlamp
switch. Turn signal operations are controlled by the
multifunction switch. Stop lamp functions are con-
trolled by the stoplamp switch. The back-up lamps
are controlled by the back-up lamp switch on the
transmission.
REMOVAL
CHASSIS CAB
(1) Disconnect and isolate the battery negative
cable.
(2) Remove screws holding tail lamp lens to lamp
body.
Fig. 28 Side Identification Lamps
1 - FENDER
2 - U-NUT
3 - IDENTIFICATION LAMP
4 - RETAINER
5 - U-NUT
BR/BELAMPS/LIGHTING - EXTERIOR 8L - 29
OUTBOARD IDENTIFICATION LAMP (Continued)

(3) Separate lens from lamp.
(4) Grasp bulb, push in slightly and rotate 1/2 turn
counter-clockwise.
PICKUP
(1) Disconnect and isolate the battery negative
cable.
(2) Remove screws from tail lamp.
(3) Grasp lamp, firmly pull lamp rearward to dis-
engage retaining studs.
(4) Remove socket from tail lamp.
(5) Separate tail lamp from cargo box.
(6) Pull bulb from socket.
INSTALLATION
CHASSIS CAB
(1) Install bulb in socket.
(2) Install lamp lens.
(3) Connect the battery negative cable.
PICKUP
(1) Install bulb in socket.
(2) Install socket in tail lamp.
(3) Position tail lamp in cargo box, engage retain-
ing studs and install screws.
(4) Connect the battery negative cable.
TAIL LAMP UNIT
REMOVAL
CAB CHASSIS
(1) Disconnect and isolate the battery negative
cable.
(2) Remove nuts attaching tail lamp to mounting
bracket (Fig. 29).
(3) Disengage tail lamp wire connector from body
wire harness.
(4) Separate tail lamp from vehicle.
PICKUP
(1) Disconnect and isolate the battery negative
cable.
(2) Remove screws from tail lamp (Fig. 30).
(3) Grasp lamp, firmly pull lamp rearward to dis-
engage retaining studs.
(4) Remove socket from tail lamp.
(5) Separate tail lamp from cargo box.
(6) Pull bulb from socket.
INSTALLATION
CAB CHASSIS
(1) Position tail lamp on vehicle.(2) Engage tail lamp wire connector to body wire
harness.
(3) Install nuts attaching tail lamp to mounting
bracket.
(4) Connect the battery negative cable.
PICKUP
(1) Install bulb in socket.
(2) Install socket in tail lamp.
(3) Position tail lamp in cargo box, engage retain-
ing studs and install screws.
(4) Connect the battery negative cable.
TURN SIGNAL CANCEL CAM
DESCRIPTION
The turn signal cancel cam is concealed within the
steering column below the steering wheel. The turn
signal cancel cam consists of two lobes that are inte-
gral to the lower surface of the clockspring rotor. The
clockspring mechanism provides turn signal cancella-
tion as well as a constant electrical connection
between the horn switch, driver airbag, speed control
switches, and remote radio switches on the steering
wheel and the instrument panel wire harness on the
steering column. The housing of the clockspring is
secured to the steering column and remains station-
Fig. 29 Tail, Brake, Turn Signal and Back-up
LampsÐCab Chassis
1 - LICENCE PLATE BRACKET
2 - FRAME
3 - TAILLAMP MOUNTING BRACKET
4 - TAILLAMP-BRAKE LAMP-BACKUP LAMP HOUSING
8L - 30 LAMPS/LIGHTING - EXTERIORBR/BE
TAIL LAMP (Continued)

ary. The rotor of the clockspring, including the turn
signal cancel cam lobes rotate with the steering
wheel.
The turn signal cancel cam is serviced as a unit
with the clockspring and cannot be repaired. If faulty
or damaged, the entire clockspring unit must be
replaced. (Refer to 8 - ELECTRICAL/RESTRAINTS/
CLOCKSPRING - REMOVAL).
OPERATION
The turn signal cancel cam has two lobes molded
into the lower surface of the clockspring rotor. When
the turn signals are activated by moving the multi-
function switch control stalk to a detent position, a
turn signal cancel actuator is extended from the
inside surface of the multi-function switch housing
toward the center of the steering column and theturn signal cancel cam. When the steering wheel is
rotated during a turning maneuver, one of the two
turn signal cancel cam lobes will contact the turn sig-
nal cancel actuator. The cancel actuator latches
against the cancel cam rotation in the direction oppo-
site that which is signaled. In other words, if the left
turn signal detent is selected, the lobes of the cancel
cam will ratchet past the cancel actuator when the
steering wheel is rotated to the left, but will unlatch
the cancel actuator as the steering wheel rotates to
the right and returns to center, which will cancel the
turn signal event and release the control stalk from
the detent so it returns to the neutral Off position.
UNDERHOOD LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Insert a small flat blade in the access slot
between the lamp base and lamp lens.
(3) Pry the lamp lens upward and remove the
lamp lens (Fig. 31).
(4) Depress the bulb terminal inward (Fig. 32) to
release the bulb.
Fig. 30 Tail, Brake, Turn Signal and Back-up Lamp
Bulb
1 - TAIL LAMP
2 - SCREW
3 - LIGHTING HARNESS
4 - BULB
5 - RETAINING CLIP
6 - RETAINING STUDS
Fig. 31 Underhood Lamp Lens
1 - LAMP
2 - LAMP LENS
BR/BELAMPS/LIGHTING - EXTERIOR 8L - 31
TURN SIGNAL CANCEL CAM (Continued)

INSTALLATION
(1) Engage the replacement bulb wire loop to the
terminal closest to the lamp base wire connector.
(2) Depress the opposite terminal inward and
engage the remaining bulb wire loop.
(3) Position the lamp lens on the lamp base and
press into place.
(4) Connect the battery negative cable.
UNDERHOOD LAMP UNIT
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Disconnect the wire harness connector from the
lamp.
(3) Remove lamp lens.
(4) Remove bulb.
(5) Remove screw attaching underhood lamp to the
inner hood panel (Fig. 33).
(6) Separate underhood lamp from vehicle.
INSTALLATION
(1) Install bulb.
(2) Install lamp lens.
(3) Position the underhood lamp on the hood inner
panel.
(4) Install the attaching screw through the lamp
and into the hood panel. Tighten the screw securely.
(5) Fold lamp housing over and firmly press onto
base to snap into place.
(6) Connect the wire harness connector to the
lamp.
(7) Connect the battery negative cable.
Fig. 32 Underhood Lamp Bulb
1 - BULB
2 - DEPRESS TERMINAL INWARD
3 - BULB WIRE LOOP
4 - LAMP BASE
Fig. 33 Underhood Lamp
1 - UNDER HOOD LAMP
2 - HOOD
3 - CONNECTOR
8L - 32 LAMPS/LIGHTING - EXTERIORBR/BE
UNDERHOOD LAMP (Continued)