operators_manual

• Keep your headlights clean using
only mild soap and water (see
Maintaining Headlight
Performance). A dirty headlight
reduces performance and creates
glare.
Aiming Headlights
The headlights were properly aimed at the
factory to meet safety specifications. If the
headlights need to be adjusted, please
have an authorized dealership aim the
headlights.
Fuses, Circuit Breakers and Relays
Fuses, circuit breakers, and relays are
located in the Power Distribution Center
(PDC) to the left of the steering column,
behind the clutch pedal. Additional fuses
are located in the engine compartment
(driver’s side firewall) and also in the
sleeper (driver’s side of vehicle) under the
bunk storage compartment. Refer to the
fuse labels affixed at each fuse panel
location (generally under the fuse panel
cover) for information about the location
and amp ratings of each circuit.
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
electrical system is designed it is important
that any accessories added after the
vehicle is built are installed only on the K-
CAN or the S-CAN. These dedicated CANs
are provided on the driver's side of the cab,
near to the interior fuse panel. Access to
MAINTENANCE - Electrical System
Y53-6126-1A1 (01/21) 257
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