Ford 2006 F-250 Owner's Manual page 209

Fuse/Relay
Location
304
305 Full ISO relay
306 Full ISO relay
307 Full ISO relay
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.
2006 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
Fuse Amp Passenger Compartment Fuse
Rating
— Not used
Upfitter control
Delayed accessory
Starter
30A circuit Delayed accessory, Power
breaker windows, Moonroof
— Not used
Panel Description
209