Exterior Bulbs
Bulb Name
Bulb Number
Center High Mounted
Stop Lamp (CHMSL)
921
Cab Roof Marker Lamps
194NA
Rear Lamp Bar ID Marker
Lamp
194
Side Marker Lamps (Dual
Rear Wheels)
194
Backup Lamp
921
Rear License Plate Lamp
194
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.
4. Reach through the access hole of the wheel house
splash shield and disengage the bulb access cover
by rotating counterclockwise.
5. Disconnect the internal lamp wiring harness connec-
tor from the low 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
replacement. An incorrect bulb size or type may
overheat and cause damage to the lamp, the bulb
socket, or the lamp wiring.
6. Rotate the bulb counterclockwise a quarter 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.
Splash Shield Access Cover
Bulb Access Cover
Bulb Access Cover
256
IN CASE OF EMERGENCY