Electrical System Preventive Maintenance
– 182 – Y53-6008
Medium Duty (R10/06)
ELECTRICAL SYSTEM
CAUTION: Do not modify or improperly repair
the vehicle’s electrical system or power distribu-
tion box. All electrical repairs should be per-
formed by an authorized Peterbilt dealer.
Improper repair or modifications will void your
warranty and/or cause serious damage to your
vehicle.
Location Of Fuses
Fuses are located inside the cab, left side, next to the driver’s
door.
Fuse Inspection and Replacement
WARNING! Do not replace a fuse with one of a
higher rating. Doing so may damage the electri-
cal system and cause a fire.
CAUTION: Before replacing a fuse, turn OFF all
lights and accessories and remove the ignition
key to avoid damaging the electrical system.
CAUTION: Never patch fuses with tin foil or wire.
This may cause serious damage elsewhere in
the electrical circuit, and it may cause a fire.
CAUTION: If a circuit keeps blowing fuses, have
the electrical system inspected for a short cir-
cuit or overload by an authorized Peterbilt dealer
as soon as possible. Failure to do so could
cause serious damage to the electrical system
and/or vehicle.
NOTE: If a fuse of the same rating is not available, a
fuse of a lower rating may be temporarily substi-
tuted. You can also use a fuse from a circuit you can
temporarily do without (for example, an accessory
circuit or radio).
BLOWN
