Regional Haul Model Operator's Manual - Peterbilt Motors Company

ELECTRICAL SYSTEM
PREVENTIVE MAINTENANCE
Adding Electrical Options
All the electrical circuits have fuses to protect them from a
short circuit or overload. If something electrical on your
chassis stops working, the first thing you should check for
is a blown fuse.
1. Turn OFF all lights and accessories and remove the
ignition key to avoid damaging the electrical system..
2. Determine from the chart on the fuse panel which
fuse controls that component.
3. Remove that fuse and see if it is blown.
BLOWN
4. If it is blown, replace it with a fuse of the same rating.
WARNING! Do not add a fuse with a rating
higher than 30 amps. Doing so may damage
the electrical system and cause a fire, possibly
causing death, personal injury or property
damage.
CAUTION: Follow all manufacturers’ circuit
protection recommendations for the components
and wires being added.
Spare circuits are located throughout the wiring for the
dash. For proper electrical system performance, refer to a
wiring diagram for your chassis before adding electrical
options.
Truck-Body Connection
Your vehicle includes a junction box mounted to the frame
for wiring the vehicle body to the main chassis harness.
Refer to the Body Builder's Manual for further information
on using the Truck and Body Connection.
– 214 – Y53-6033 Regional Haul (R05/10)