Ford F-250 Owner's Manual page 314

Roadside Emergencies
To remove the fuse panel cover, pull
the panel toward you. When the
clips of the panel disengage, let the
panel fall easily.
To remove a fuse use the fuse puller
tool provided on the fuse panel
cover.
WARNING: Always disconnect the battery before servicing high
current fuses.
Always replace the cover to the passenger compartment fuse
panel before reconnecting the battery.
If the battery has been disconnected and reconnected, refer to the
Battery section of the Maintenance and Specifications chapter.
314
2011 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)