Ford 2005 F250 Owner's Manual page 211

Fuse/Relay
Location
304
305
306
307
601
602
* Mini fuse ** Cartridge fuse
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.
Always disconnect the battery before servicing high current
fuses.
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.
Fuse Amp
Rating
—
Full ISO relay
Full ISO relay
Full ISO relay
30A circuit
breaker
—
Roadside Emergencies
Passenger Compartment Fuse
Panel Description
Not used
Upfitter control
Delayed accessory
Starter
Delayed accessory, Power
windows, Moonroof
Not used
211