bulb RAM CHASSIS CAB 2019 User Guide

IN CASE OF EMERGENCY 371
NOTE:
• Your vehicle may be transmitting data as authorized by
the subscriber.
• Never place anything on or near the vehicle’s LTE (voice/
data) or 4G (data) and GPS antennas. You could prevent
LTE (voice/data) or 4G (data) and GPS signal reception,
which can prevent your vehicle from placing an emer -
gency call. An operable LTE (voice/data) or 4G (data)
network connection and a GPS signal is required for the
SOS Call system to function properly. General Information
This device complies with Part 15 of the FCC Rules. Opera -
tion is subject to the following two conditions: (1) This device
may not cause harmful interference, and (2) this device must
accept any interference received, including interference that
may cause undesired operation.
NOTE:
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
BULB REPLACEMENT
Replacement Bulbs
All of the inside bulbs are brass or glass-wedge base. Aluminum base bulbs are not approved.
Interior Bulbs
Bulb Number
Overhead Console Lamps TS 212–9
Dome Lamp 7679
NOTE:
For lighted switches, see your authorized dealer for replacement instructions. 6

372 IN CASE OF EMERGENCY
Exterior Bulbs
Bulb Number
Low Beam (Halogen Reflector Headlamp) H11LL
High Beam (Halogen Reflector Headlamp) 9005LL
Low & High Beam (LED Reflector Headlamp) LED (Serviced At An Authorized Dealer)
Low & High Beam (LED Projector Headlamp) LED (Serviced At An Authorized Dealer)
Turn Signal / Front Position (Halogen Reflector Headlamp) 7444NA
Turn Signal / Front Position (LED Headlamps) LED (Serviced at authorized dealer)
Front Side Marker (Halogen Reflector Headlamp) W5W
Front Side Marker (LED Headlamps) LED (Serviced At An Authorized Dealer)
Front Fog Lamps (Halogen Reflector Headlamp) H11LL
Front Fog Lamps (LED Headlamps) LED (Serviced At An Authorized Dealer)
Side Indicators (Front And Side View Mirror) LED (Serviced at authorized dealer)
Center High Mounted Stop Lamp (CHMSL) 921
Cab Roof Marker Lamps 194NA
Box Off Tail Lamps – Stop/Turn/Tail/License Plate 1157
Box Off Tail Lamps – Back Up 1156

IN CASE OF EMERGENCY 373
Replacing Exterior Bulbs
Base Quad: Low Beam Headlamp, High Beam Headlamp,
Front Park And Turn — If Equipped
Low Beam
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Reach into the front wheel house ahead of the front
wheel, remove the fastener, and lift the cover over the
access hole in the front of the wheel house splash shield.
Access to the rear of the lamp can be gained through this
access hole. Splash Shield Access Cover1 — Access Cover
2 — Fastener
6

374 IN CASE OF EMERGENCY
(Continued)4. Reach through the access hole of the wheel house splash
shield and disengage the bulb access cover by rotating
counterclockwise.
Bulb Access Cover
5. Disconnect the internal lamp wiring harness connector
from the low beam bulb. 6. Rotate the bulb counterclockwise 1/4 turn to unlock the
bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and
covers.
High Beam
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to find
the high beam bulb access cover.
4. Reach behind the headlamp and disengage the access
cover by rotating counterclockwise.
5. Disconnect the internal lamp wiring harness connector
from the high beam bulb.CAUTION!
• Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result. • Always use the correct bulb size and type for replace -
ment. An incorrect bulb size or type may overheat and
cause damage to the lamp, the bulb socket, or the lamp
wiring. CAUTION! (Continued)

IN CASE OF EMERGENCY 375
6. Rotate the bulb counterclockwise 1/4 turn to unlock the
bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and
covers.
Front Park And Turn
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Look under the hood and behind the headlamp to find
the park and turn socket. Park And Turn Socket
4. Reach behind the headlamp and unlock the park and turn
socket from the lamp by rotating counterclockwise ¼
turn.
5. Pull the bulb straight out from the housing.
6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and
covers.CAUTION!
• Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.
• Always use the correct bulb size and type for replace -
ment. An incorrect bulb size or type may overheat and
cause damage to the lamp, the bulb socket, or the lamp
wiring.
6

376 IN CASE OF EMERGENCY
Side Marker Lamp
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Reach into the front wheel house ahead of the front
wheel, remove the fastener, and lift the cover over the
access hole in the front of the wheel house splash shield.
Access to the rear of the lamp can be gained through this
access hole.
Splash Shield Access Cover 4. Reach through the access hole of the wheel house splash
shield and disengage the side marker socket by rotating
counterclockwise ¼ turn.
Side Marker Socket
5. Pull the socket and bulb straight out from the housing.
6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and
covers.
1 — Access Cover
2 — Fastener

IN CASE OF EMERGENCY 377
Fog Lamps — If Equipped
1. Reach under and behind the front bumper to access the
back of the front fog lamp housing.
2. Disconnect the fog lamp wiring harness connector from
the fog lamp bulb.
3. Rotate the bulb counterclockwise ¼ turn to unlock the
bulb from the housing.
4. Pull the bulb straight out from the housing. Center High-Mounted Stoplamp (CHMSL) With Cargo
Lamp
1. Remove the two screws holding the housing/lens to the
body as shown.
CHMSL Mounting Screw LocationsCAUTION!
Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.
6

378 IN CASE OF EMERGENCY
2. Separate the connector holding the housing and wiring
harness to the body.
CHMSL Connector Location
3. Turn the desired bulb socket ¼ turn and remove the
socket and bulb from housing.
4. Pull the desired bulb straight from the socket. CHMSL Bulb And Socket
• Outside Bulbs: Cargo Lamps
• Inside Bulb: Center High-Mounted Stop Lamp
5. Reverse the procedure for installation of bulbs and
housing. CAUTION!
Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contact other oily
surfaces. Shortened bulb life will result.

IN CASE OF EMERGENCY 379
Cab Top Clearance Lamps — If Equipped
1. Remove the two screws from the top of the lamp.
Removing Rear Screw From Clearance Lamp 2. Rotate the bulb socket ¼ turn and pull it from the lamp
assembly.
Removing Bulb Socket From Clearance Lamp
6

380 IN CASE OF EMERGENCY
3. Pull the bulb straight from it's socket and replace.
Removing The Bulb From The Bulb Socket FUSES
WARNING!
• When replacing a blown fuse, always use an appro -
priate replacement fuse with the same amp rating as the
original fuse. Never replace a fuse with another fuse of
higher amp rating. Never replace a blown fuse with
metal wires or any other material. Do not place a fuse
inside a circuit breaker cavity or vice versa. Failure to
use proper fuses may result in serious personal injury,
fire and/or property damage.
• Before replacing a fuse, make sure that the ignition is
off and that all the other services are switched off and/
or disengaged.
• If the replaced fuse blows again, contact an authorized
dealer.
• If a general protection fuse for safety systems (air bag
system, braking system), power unit systems (engine
system, transmission system) or steering system blows,
contact an authorized dealer.