Protected componentsFuse amp ratingFuse or relay number
Steering wheel control module5A26
Not used (spare)20A27
Ignition switch15A28
GPS module20A29RadioSYNC
Parking lamp relay15A30Trailer tow parking lamp relay
Customer access5A31Trailer brake controller (brake signal)
Auto dimming mirror15A32Driver and passenger door lock switchilluminationDriver and passenger smart window motorMoonroof motorPassenger window switchPower inverterRear heated seat switch illuminationTelescoping mirror switch
Restraint control module10A33
Heated steering wheel module10A34Rear heated seats module
Reverse park aid module5A35Select shift switchTrailer brake control module
Fuel tank select switch10A36
Positive temperature coefficient heater10A37
AM/FM base radio10A38
High beam headlamps15A39
Parking lamps (in mirrors)10A40Roof marker lamps
Passenger airbag deactivation indicator7.5A41
Not used (spare)5A42
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Super Duty (TFA) Canada/United States of America, enUSA, First Printing
Fuses
Protected componentsFuse amp ratingFuse or relay number
Wiper relay10A43
Auxiliary switches10A44
Not used (spare)5A45
Climate control10A46
Fog lamps15A47Fog lamp indicator (in switch)
Power rear sliding window switch30A Circuit breaker48Power windows switchMoonroof switch
Delayed accessoryRelay49
CHANGING A FUSE
Fuses
WARNING
Always replace a fuse with one thathas the specified amperage rating.Using a fuse with a higher amperagerating can cause severe wire damage andcould start a fire.
If electrical components in the vehicle arenot working, a fuse may have blown. Abreak in the fuse wire will indicate a blownfuse. Check the appropriate fuses beforereplacing any electrical components.
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Super Duty (TFA) Canada/United States of America, enUSA, First Printing
FusesE142430
•An authorized dealer needs to installmobile communications systems.Improper installation may harm theoperation of your vehicle, particularlyif the manufacturer did not design themobile communication systemspecifically for automotive use.
•If you or an authorized Ford dealer addany non-Ford electrical or electronicaccessories or components to yourvehicle, you may adversely affectbattery performance and durability. Inaddition, you may also adversely affectthe performance of other electricalsystems in the vehicle.
The auxiliary switch option packageprovides four switches, mounted in thecenter of the instrument panel. Theseswitches operate only while the ignition isin the on position, whether the engine isrunning or not. Ford recommends, however,that the engine remain running to maintainbattery charge when using the auxiliaryswitches for extended periods of time orhigher current draws.
Note:When your vehicle has a dieselengine, use the auxiliary switches only whilethe engine is running. The glow plugs alsodrain battery power when the ignition key isin the on position. Using the auxiliaryswitches, even for limited amounts of time,can cause your battery to drain quickly andprevent your vehicle from restarting.
When switched on, the auxiliary switchesprovide 8 amps, 12 amps or 20 amps ofelectrical battery power for a variety ofpersonal or commercial uses.
The relay box for the auxiliary switches ison the end of the left side of the instrumentpanel. See your authorized dealer forservice.
The relays are coded as shown:
Each switch includes a power lead, ablunt-cut and sealed wire located belowthe instrument panel and to the left of thesteering column.
The power leads are coded as shown:
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Super Duty (TFA) Canada/United States of America, enUSA, First Printing
AccessoriesE163431 E163432 E165186
