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Fuse/Relay
Location
Fuse Amp
Rating
Protected Circuits
11
30A**
Power running board motors
12
40A**
Electric fan
13
30A**
Starter relay
14
30A**
Passenger power seats
15
40A**
Electric fan
16
—
Not used
17
30A**
Trailer brake
18
30A**
Upfitter 1
19
30A**
Upfitter 2
20
20A**
4x4 module (ESOF)
21
30A**
Trailer tow battery charge
22
20A**
Cigar lighter
23
—
A/C clutch relay
24
—
Upfitter 4 relay
25
—
Heated mirror relay
26
10A*
PCM – keep alive power, Canister
vent solenoid, Transmission, PCM
relay
27
20A*
Fuel pump relay
28
10A*
Upfitter 4
29
10A*
4x4
30
10A*
A/C clutch
31
20A*
Trailer tow park lamp relay
32
40A**
Heated backlite
33
—
Not used
34
40A**
PCM relay
35
—
Not used
36
30A**
Roll stability control module (RSC)
37
—
Trailer tow left hand stop/turn
relay
38
—
Trailer tow right hand stop/turn
relay
Roadside Emergencies
327
2010 F-150
(f12)
Owners Guide, 1st Printing
USA
(fus)