1. Remove the back cover plate from
the back side of the headlight pod
using a standard Phillips head
screw driver.
2. Turn the bulb lock ring
counterclockwise and remove the
bulb.
Do not allow the glass of the new
headlamp bulb to come into contact with
anything. The glass could become
contaminated and cause bulb failure.
3. Reassemble in reverse order.
Fuses, Circuit Breakers and Relays
Fuses, circuit breakers, and relays are
located in the Power Distribution Box to the
left of the steering column behind the
clutch pedal. Additional fuses are located
in the engine compartment (drivers side
bulkhead) and also in the sleeper (left side
of vehicle) under bunk storage
compartment.
Altering the Electrical System
Refer to a wiring diagram for your chassis
before adding electrical options to ensure
proper electrical system performance.
WARNING
DO NOT replace a fuse with a fuse of
a higher rating. Doing so may damage
the electrical system and cause a fire.
Failure to comply may result in proper-
ty damage, personal injury, or death.
WARNING
Never install a circuit breaker/poly-
switch in a location indicated for “fuse
only.” Using a polyswitch (circuit
breaker) in a fuse-only circuit may
cause the circuit to overheat when a
short exists, which could lead to equip-
ment damage and/or personal injury.
NOTE
Polyswitches/circuit breakers are al-
lowed in certain locations as indicated
by the label on the fuse box. In these
applications, a fuse may be used in-
stead of a circuit breaker.
CAUTION
Follow all manufacturers' circuit pro-
tection recommendations for the com-
ponents and wires being added. Fail-
ure to comply may result in equipment
damage.
NOTE
If you are unfamiliar with proper elec-
trical repair practices and procedures,
see your authorized dealer for assis-
tance.
Vehicle CAN Bus
Your vehicle is equipped with a CAN bus
electrical system. Because of how the
MAINTENANCE - Electrical System
236 Y53-6076-1D1 (09/20)
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