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Fuse/Relay
Location
Fuse Amp
Rating
Protected Circuits
45 5A Front wiper logic, Blower motor
relay coil
46 7.5A Not used (spare)
47 30A Circuit
Breaker
Power windows, Moon roof,
Power Sliding Backlite
48 Relay Delayed accessory
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
WARNING: Always disconnect the battery before servicing high
current fuses.
WARNING: To reduce risk of electrical shock, always replace
the cover to the Power Distribution Box before reconnecting the
battery or refilling fluid reservoirs.
If the battery has been disconnected and reconnected, refer to the
Battery section of the Maintenance and Specifications chapter.
2009 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)
Roadside Emergencies
322