Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
36 10A Restraint control module,
Occupant classification system
module
37 10A Trailer brake control
38 10A Delayed accessory – 110V power
point, Radio (AM/FM)
39 15A High beam headlamps
40 10A Rear park lamps
41 7.5A Passenger airbag deactivation
indicator, Upfitter switch (SVT
Raptor)
42 5A Overdrive cancel switch
43 10A Not used (spare)
44 10A Not used (spare)
45 5A Not used (spare)
46 10A Climate controls module
47 15A Fog lamps, Exterior mirror turn
signals
48 30A Circuit
BreakerPower rear windows, Power
sliding back window
49 Relay Delayed accessory
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.
WARNING:To reduce risk of electrical shock, always replace
the cover to the power distribution box before reconnecting the
battery or refilling fluid reservoirs.
Roadside Emergencies
332
2012 F-150(f12)
Owners Guide, 1st Printing
USA(fus)
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
77 10A* PCM – Voltage power 3 (Emission
related powertrain components,
Electric fan relays coil)
78 15A* PCM – Voltage power4–Ignition
coils (3.5L, 3.7L, 5.0L engines)
20A* PCM – Voltage power4–Ignition
coils (6.2L engine)
79 5A* Rain sensor
80 — Not used
81 — Not used
82 — Not used
83 — Not used
84 — Not used
85 — Electric fan relay (low speed)
*Mini fuse **Cartridge fuse
Auxiliary relay box (SVT Raptor only)
The relay box is located in the left rear corner of the engine compartment.
Fuse/Relay
locationFuse amp
ratingDescription
1 — Upfitter 1 relay
2 — Upfitter 2 relay
3 — Upfitter 3 relay
246
135
Roadside Emergencies
337
2012 F-150(f12)
Owners Guide, 1st Printing
USA(fus)
