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Fuse/Relay
Location
Fuse Amp
Rating
Protected Circuits
33 10A Trailer brake controller
34 5A Electronic locking differential
indicator
35 10A Rear park assist
36 5A Passive anti-theft system
transceiver
37 10A Upfitter relay coils
38 20A Subwoofer
39 20A Radio, Navigation display
40 20A Rear heated seats module
41 15A Auto dimming rear view mirror,
Door lock switch illumination,
Radio accessory delay
42 10A Not used (spare)
43 10A Heated mirror/backlight relay,
Rain sensor, Reverse camera
44 10A Not used (spare)
45 5A Front wiper logic, Blower motor
relay
46 7.5A Occupant classification sensor
(OCS)
47 30A Circuit
Breaker
Power windows, Moon roof,
Power sliding backlight
48 15A Delayed accessory relay (Feeds
fuse 41 and circuit breaker 47)
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.
Roadside Emergencies
325
2010 F-150 (f12)
Owners Guide, 1st Printing
USA (fus)