Ford Super Duty (2018 year). Manual — part 143

•

Cruise control.

•

Tool or Cargo boxes*.

•

Vehicle security system.

•

Wheel locks.

•

Wheel well liners.

*The accessory manufacturer designs,
develops and therefore warrants Ford
Licensed Accessories, and does not design
or test these accessories to Ford Motor
Company engineering requirements.
Contact an authorized Ford dealer for the
manufacturer’s limited warranty details,
and request a copy of the Ford Licensed
Accessories product limited warranty from
the accessory manufacturer.

For maximum vehicle performance, keep
the following information in mind when
adding accessories or equipment to your
vehicle:
•

When adding accessories, equipment,
passengers and luggage to your
vehicle, do not exceed the total weight
capacity of the vehicle or of the front
or rear axle (GVWR or GAWR as
indicated on the Safety Compliance
Certification label). Ask an authorized
dealer for specific weight information.

•

The Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulate the use
of mobile communications systems
that are equipped with radio
transmitters, for example two-way
radios, telephones and theft alarms.
Any such equipment installed in your
vehicle should comply with Federal
Communications Commission (FCC)
and Canadian Radio
Telecommunications Commission
(CRTC) regulations and should be
installed only by an authorized dealer.

•

An authorized dealer needs to install
mobile communications systems.
Improper installation may harm the
operation of your vehicle, particularly
if the manufacturer did not design the
mobile communication system
specifically for automotive use.

•

If you or an authorized Ford dealer add
any non-Ford electrical or electronic
accessories or components to your
vehicle, you may adversely affect
battery performance and durability. In
addition, you may also adversely affect
the performance of other electrical
systems in the vehicle.

AUXILIARY SWITCHES

(If Equipped)

For maximum vehicle performance, keep
the following information in mind when
adding accessories or equipment to your
vehicle:
•

When adding accessories, equipment,
passengers and luggage to your
vehicle, do not exceed the total weight
capacity of the vehicle or of the front
or rear axle (GVWR or GAWR as
indicated on the Safety Compliance
Certification label). Ask an authorized
dealer for specific weight information.

•

The Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulate the use
of mobile communications systems
equipped with radio transmitters, for
example, two-way radios, telephones
and theft alarms. Any such equipment
installed in your vehicle should comply
with Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulations, and
should be installed by an authorized
dealer.

•

An authorized dealer needs to install
mobile communications systems.
Improper installation may harm the
operation of your vehicle, particularly
if the manufacturer did not design the
mobile communication system
specifically for automotive use.

•

If you or an authorized Ford dealer add
any non-Ford electrical or electronic
accessories or components to your
vehicle, you may adversely affect
battery performance and durability. In
addition, you may also adversely affect
the performance of other electrical
systems in the vehicle.

E220728

The auxiliary switch option package
provides six switches mounted in the
overhead console. These switches operate
when the vehicle is running or from battery
power, depending on the switchable fuse
AUXF4's location in the upfitter relay box.
We recommend, however, that the engine
remain running to maintain battery charge
when using the auxiliary switches for
extended periods of time or higher current
draws.

Note: When your vehicle has a diesel
engine, use the auxiliary switches only when
the engine is running. The glow plugs also
drain battery power when the ignition key is
in the on position. Using the auxiliary
switches, even for limited amounts of time,
can cause your battery to drain quickly and
prevent your vehicle from restarting.

When switched on, the auxiliary switches
provide electrical battery power for a
variety of personal or commercial uses.
Switches 1 through 4 provide 25 amps.
Switches 5 and 6 provide 40 amps.

The relay box for the auxiliary switches is
in the rear of the engine compartment,
near the back wall. See your authorized
dealer for service.

The relays are coded as shown:

E220729

Each switch includes a blunt-cut, sealed
wire. The wires are under the instrument

panel on the right-hand side of the
passenger footwell.

E220730

The power leads are coded as shown:

Fuse Amp Rating

Wire Color

Circuit Number

Switch

25A

Brown with green

trace

CB117A

AUX 1

25A

Violet with orange

trace

CB114A

AUX 2

25A

Blue with green

trace

CB116A

AUX 3

Fuse Amp Rating

Wire Color

Circuit Number

Switch

25A

Gray with brown

trace

CB113A

AUX 4

40A

Brown with blue

trace

CB115A

AUX 5

40A

Gray with orange

trace

CB118A

AUX 6

Upfitter Interface Module

(If Equipped)

The Upfitter Interface Module (UIM) is an
electronic control module that operates
equipment (such as lift buckets, cranes,
motors, salt spreaders and snow plows)
with external relays.

If you replace the module, it will require
additional programming by the upfitter.
Obtain this data directly from the upfitter
company. The upfitter contact information
is in the vehicle door opening.

For more information on the Upfitter
Interface Module and the auxiliary
switches, contact your upfitter.