FORD 2013 F-550 v.1 - Manual (Page 287)

FUSE SPECIFICATION CHART
Power Distribution Box
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.
The power distribution box is located in the engine compartment. It has
high-current fuses that protect your vehicle’s main electrical systems
from overloads.
If the battery has been disconnected and reconnected, see Changing the
Vehicle Battery in the Maintenance chapter.
The high-current fuses are coded as follows:
Fuse or relay
location
Fuse amp
rating
Protected circuits
1 Relay Blower motor
2 — Not used
3 Relay Urea heaters (diesel engine)
4 — Not used
5 Relay Rear window defroster, Heated
mirrors
6 — Not used
286 Fuses
2013 F-250/350/450/550 (f23)
Owners Guide gf, 1st Printing
USA (fus)