2013 FORD F750 engine

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
204 — Windshield wiper relay
205 — Body builder relay, right turn
206 — Body builder relay, left turn
207 — ABS event relay (hydraulic brake vehicles
only)
208 — Body builder relay, back up lamps relay
209 — Auxiliary stop lamp relay
301 — Fuel heater/Fuel transfer pump relay (diesel
engine only)
— Fuel pump module (gasoline engine only)
302 — Body builder relay, parking lamps relay
303 — Blower motor relay
304 — DEF (Urea) line heaters relay (diesel engine
only)
— Powertrain control module power VPWR1
(gasoline engine only)
Individual Maxi Fuse Holder in Engine Compartment
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
9925 30A Hydraulic brakes pump motor 1
198Fuses
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

Passenger Compartment Fuse Panel
The fuse box is located behind the passenger airbag cover and can be
accessed through the glove box.
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 20A Horn
2 15A Flasher relay
3 20A Power point
4 10A Data Link Connector (DLC), Engine
diagnostic connector, Parking brake warning
5 15A Run relay
6 — Not used
7 — Not used
8 5A Radio, GEM
9 5A Power window relay
10 15A Heated mirrors
11 5A Wiper and washer systems
12 10A Transmission shift selector
13 20A Radio/SYNC®, Power mirrors
14 10A Interior lamp relay
15 10A Interior lamp relay
Relay #2
Relay #3
Horn
Relay #4
Relay #5#1
#12#22
#2
#13#23
#3
#14#24
#4
#15#25
#6
#17#27 #5
#16#26
#7
#18#28
#8
#19#29
#9 #30
#10
#20
#11
#21#31 Relay #1
Fuses199
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
16 15A High beams, Indicator
17 — Not used
18 5A Dimmer switch, Interior lighting
19 15A Engine control (diesel engine only)
20 5A Starting system
21 10A DRL resistor
22 15A Air horn, Air suspension dump, Two-speed
axle, Driver-controlled locking differential
23 10A Flasher relay
24 15A Hydraulic brakes relay, Fuel heater relay
(diesel engine only), Air dryer
25 10A Blower motor relay coil
26 10A Right-hand low beam headlight
27 — Not used
28 10A Left-hand low beam headlight
29 10A Cluster, GEM
30 15A Allison electronic transmission
31 15A Mirror fold relay
Relay 1 — Interior lamps
Relay 2 — Not used
Relay 3 — Horn
Relay 4 — Not used
Relay 5 — Not used
200Fuses
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

Relay Center
The relay center is located along the passenger side A-pillar on the right
side of the footwell.
Relay
LocationRelay Description
R1 Spring applied hydraulic release warning chime module or
PCM power VPWR 2, 3 and 4
R2 A/C compressor clutch
R3 Power windows
R4 Flasher (standard/LED)
R5 Upfitter relay 1
R6 Upfitter relay 2
R7 Headlights
R8 Spare
R9 Upfitter relay 3
R10 Starter
R11 DCU (diesel engine only)
R12 Two–speed axle/Differential lock
R13 Door lock
R14 Air tank moisture valve
R15 DRL #1
R16 Heated mirrors
R17 Spare
R18 Upfitter relay 4
R1
R9 R10 R11 R12 R13 R14 R15 R16 R17
R18 R19 R20 R21 R22 R23 R24 R25 R26
R2 R3 R4 R5 R6 R7 R8
Fuses201
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

Relay
LocationRelay Description
R19 Shift interlock/EPRNDL display
R20 Selective Catalyst Reduction (SCR) system (NOx) (diesel
engine only)
R21 Run
R22 Door unlock
R23 ABS warning indicator
R24 DRL #2
R25 Park lights
R26 Spare
Trailer Tow Relays (If Equipped)
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 30A* Trailer tow ABS feed (non electric trailer
brake vehicles only)
2 30A* Trailer tow park/marker lamps
3 30A* Trailer tow stop lamps
TRAILER
ABS
TRAILER
STOP
LAMPTRAILER
MARKER
LAMP
TRAILER
TA I L
LAMPNOT
USEDNOT
USED
LH
TURNRH
TURN30A
30A
30A
30A
NOT USED
5 4 32 1 R1R2R5
R6
R3R4R7
R8
202Fuses
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
4 30A* Trailer tow turn/stop lamps (combined)
Trailer tow turn lamps (separate)
5 — Not used
R1 — Trailer tow ABS relay (non electric trailer
brake vehicles only)
R2 — Trailer tow marker lamp relay
R3 — Trailer tow stop lamp relay
R4 — Trailer tow tail lamp relay
R5 — Not used
R6 — Not used
R7 — Trailer tow left turn lamp relay
R8 — Trailer tow right turn lamp relay
*Maxi fuse
Inline Fuses
Your vehicle may have several inline fuses located in, or on, the battery
cables located in the battery box (depending on application).
•All vehicles equipped with an Allison transmission have a 10 amp fuse
located in the clean power cables located in the battery box.
•All vehicles have a 30 amp fuse located in the clean power cables
located in the battery box.
•All vehicles equipped with an Eaton transmission have a 30 amp fuse
located in the clean power cables located in the battery box.
•All vehicles equipped with hydraulic brakes have a 40 amp fuse
located in the clean power cables located in the battery box. In
addition, another 30 amp fuse is located in a fuse holder just above
the power distribution center located in the vehicle’s engine
compartment.
Fuses203
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

GENERAL INFORMATION
WARNING:Making modifications to various parts, components
and systems of the vehicle, such as brake and steering systems,
can adversely affect the quality, reliability and operation of your vehicle
and could result in property damage, personal injury or death. Such
modifications must be avoided.
WARNING:Failure to properly perform maintenance and
servicing procedures could result in vehicle damage, personal
injury or death.
WARNING:Take care when performing any maintenance,
system check or service on your vehicle. Some of the materials
may also be hazardous if used, serviced or handled improperly and
could result in property damage, personal injury or death.
Always use care when performing vehicle maintenance, repairs or system
checks. Improper or incomplete service could result in the vehicle not
working properly which may result in personal injury or damage to the
vehicle or equipment. It is the operator’s responsibility to see that the
vehicle receives proper care and maintenance. If you have any questions
about performing service, have the service done by a qualified technician.
Servicing Guidelines
When servicing your vehicle:
•always wear safety glasses for eye protection.
•always set the parking brake or chock the wheels.
•always use support stands, not a jack, when working under a raised
vehicle.
•always turn off the ignition unless a procedure requires the engine to
be running.
•always avoid contact with hot metal parts. Allow the components to
cool before working with, or around, them.
•always operate the engine in a well-ventilated area.
•do not wear loose-fitting clothing, hanging jewelry, watches or rings.
•do not smoke.
•do not work on the brakes or the clutch unless the proper
precautions are taken to avoid inhaling friction material dust.
Quality service parts are available through your dealer. If dealer parts are
not used, make sure the replacement parts are of equivalent quality.
204Maintenance
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)

WARNING:The use of inferior parts can adversely affect the
quality and reliability of your vehicle which, in turn, can result in
property damage, personal injury or death.
To avoid damage to the vehicle’s electrical components prior to electric
welding:
•disconnect both battery cables.
•attach the welder ground cable as close as possible to the part being
welded.
•it is recommended that the component be temporarily removed if
welding close to an electrical component.
Follow the checks and services in theScheduled Maintenancechapter.
Have your dealer or service center inspect your vehicle at least once a
year. Remember that regular maintenance and inspections usually
prevent serious problems from developing later.
If the owner or operator of the vehicle is a skilled technician and intends
on performing the vehicle maintenance and service, he is strongly urged
to purchase a service manual.
Electrical System
Periodically inspect electrical connectors on the outside of the cab and
on the engine and frame for corrosion and tightness. Exposed terminals,
such as the fuel sender, cranking motor, alternator and feed-through
studs, should be cleaned and re-coated with a lubricant sealing grease
such as Motorcraft® Silicone Brake Caliper Grease and Dielectic
Compound XG-3, or equivalent. This should include the ground cable
connector for batteries, engine and cab as well as the jump starting stud.
Accessory Feed Connections
Vehicle electrical systems are complex and often include powertrain
components, such as engine and transmission controls, instrument
panels, ABS, etc. While most systems operate on battery voltage
(12 volts), some systems can be as high as 90 volts or as low as five
volts. See theElectrical Circuit Diagram Manuals,available from your
vehicle’s manufacturer, to make sure that any additional body lights and
accessories are connected to circuits that are both appropriate and not
overloaded. No modification should be made to any vehicle control
system without first contacting your dealer.
Maintenance205
2013 F-650/750(f67)
Owners Guide gf, 2nd Printing, March 2013
USA(fus)