LVD Setup
Change the L
VD battery voltage set point
for LVD to turn on Low Voltage Disconnect
(LVD) (option) on page 233.
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 for the
alternator, engine electronics and trailer
battery charge circuit may be located in the
Power Distribution Center (PDC) inside the
battery box and/ or on the engine side of
the cab firewall.
Adding Electrical Options
WARNING
Do not add a fuse with a rating higher
than 30 amps. Follow the circuit pro-
tection size/type recommended by the
component manufacturer. Installing a
fuse or circuit breaker greater than
designated may damage the electrical
system which could lead to equipment
damage and/or personal injury.
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.
NOTE
Do not install a circuit breaker in place
of a fuse for the following circuits:
• ACC FEED
• BODY IGN
• CAB ABS - BATT
• CAB ABS - IGN
• CAB ACC
•
CB PWR
• CECU - BATT (2 PLCS)
• CECU IGN
• DOOR IGN
• ENG AUX
• ENG SD
• FOG LMPS
• GAUGE CL
• HIGH BEAM SUP
• LH DR / DOOR LOCK
• LOW BEAM SUP
• PARK LMP SNSE
• RADIO MEM
• RADIO PWR
• RH DOOR
• SLPR ACC
• RKE
• TRLR ABS
• TURN MOD PWR
Typical - See reverse side of Power
Distribution Box cover for fuse and relay
locations
Maximum Number of Lamps
Allowed per Circuit
• Vehicle Stop/Turn Signal Circuit
MAINTENANCE - Electrical System
234 Y53-6113-1A1 (11/20)
5
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