Fuse Box Diagrams Ford F-650 / F-750 (2011-2015)

In this article, you will find information about the fuses of the Ford F-650 / F-750 (models 2011, 2012, 2013, and 2015), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Ford F-650 / F-750 (2011-2015)

Checking and Replacing Fuses in Ford F-650 / F-750

If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components. To remove a fuse use the fuse puller tool provided on the fuse panel cover.

Caution!

  • Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire.
  • Always disconnect the battery before servicing high current fuses.
  • Always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.

Location of Fuse Boxes

Passenger Compartment Fuse Panel:
The fuse box is located behind the passenger airbag cover and can be accessed through the glove box.
Ford F-650 / 750 (2011-2015): Passenger compartment fuse panel location

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.
Ford F-650 / 750 (2000-2015): Engine compartment fuse box location


Fuse Box Diagrams

2011

Passenger Compartment Fuse Panel

Ford F-650 / 750 (2011): Passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2011)
AFuse description
120AHorn
215AFlasher relay
320APower point
410AData Link Connector (DLC), Engine diagnostic connector, Parking brake warning
515ARun relay
6-Not used
7-Not used
85ARadio, GEM
95APower window relay
1015AHeated mirrors
115AWiper and washer systems
1210ATransmission shift selector
1320ARadio, Power mirrors
1410AInterior lamp relay
1510AInterior lamp relay
1615AHigh beams, Indicator
17-Not used
185ADimmer switch, Interior lighting
1915AEngine control
205AStarting system
2110ADRL resistor
2215AAir horn, Air suspension dump, Two-speed axle, Driver-controlled locking differential
2310AFlasher relay
2415AABS relay, Fuel heater relay, Air dryer
2510ABlower motor relay
2610ARight-hand low beam headlight
27-Not used
2810ALeft-hand low beam headlight
2910ACluster, GEM
3015AAllison electronic transmission
3115AMirror fold relay
Relay 1-Interior lamps
Relay 2-Not used
Relay 3-Horn
Relay 4-Not used
Relay 5-Not used
Power Distribution Box

Ford F-650 / 750 (2011): Engine compartment fuse box diagram

List of fuses in the power distribution box (2011)
AFuse description
120AUpfitter switches (AUX 2 and AUX 4)
230APower seat (driver)
330APower seat (passenger)
415AWindshield washer relay, Washer pump motor
55ABrake warning switch (hydraulic brake only)
620AUpfitter switches (AUX 1 and AUX 3)
715ABrake pressure switches, ABS event relay
820ADEF (Urea), Line heaters
920AIgnition switch, Starter cutoff
1015AAir tank moisture removal valve
1130AElectric trailer brake
1220APassenger compartment fuse box 5 and 21
1315AInstrument cluster/Gateway module
1420ANitrogen oxide sensor
15-Not used
165ABendix Air ABS
17-Not used
1810AFuel transfer pump
19-Not used
20-Not used
21-Not used
22-Not used
23-Not used
24-Not used
10130ABendix Air ABS relay (Air brake vehicles only)
Hydraulic brakes module (Hydraulic brake vehicles only)
10220AIgnition switch
10320AIgnition switch, Passenger compartment fuse box fuses 19, 29 and 30
10420APower point
10520APower door lock switches
10630AMain light switch, Multi-function switch
10750APassenger compartment fuse box fuses 1,2, 3, 4, 12, 13, 14 and 15
10840AFuel heater
10940APower window
11030AWindshield wiper
11130ABody builder relay, Parking lamps
11240ABlower motor
11330AHeated seats, Air-Ride seat
11420AAftertreatment DCU
11520AIgnition switch, Passenger compartment fuse box fuses 8, 9, 10 and 11
11630ALeft/Right turn relays, Back-up lamp relay
11720AStoplamps
11860AHydraulic brake vehicles (Trailer tow package only)
60160ATrailer socket
60260AAir brake trailer tow fuse block
30AHydraulic brakes pump motor 2
201-Windshield washer relay
202-Wiper high/low relay
203-Wiper run/park relay
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 stoplamp relay
301-Fuel heater/Fuel transfer pump relay
302-Body builder relay, parking lamps relay
303-Blower motor relay
304-DEF (Urea) line heaters relay
Individual maxi-fuse holder in engine compartment
992530AHydraulic brakes pump motor 1

Relay Center

The relay center is located along the passenger side A-pillar on the right side of the footwell.

Ford F-650 / 750 (2011): relay box diagram

Relay Center (2011)
Description
R1Spring applied hydraulic release warning chime module
R2A/C compressor clutch
R3Power Windows
R4Flasher (standard/LED)
R5Upfitter relay 1
R6Upfitter relay 2
R7Headlights
R8Spare
R9Upfitter relay 3
R10Starter
R11DCU
R12Two-speed axle/Differential lock
R13Door lock
R14Air tank moisture valve
R15DRL #1
R16Heated mirrors
R17Spare
R18Upfitter relay 4
R19PRNDL display
R20Selective Catalyst Reduction (SCR) system (NOx)
R21Run
R22Door unlock
R23ABS warning indicator
R24DRL #2
R25Park lights
R26Spare

Trailer Tow Relays (If Equipped)

Ford F-650 / 750 (2011): relay box diagram

Trailer Tow Relays (If Equipped) (2011)
ADescription
130A*Trailer tow ABS feed (non electric trailer brake vehicles only)
230A*Trailer tow park/marker lamps
330A*Trailer tow stop lamps
430A*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 fiise

Inline fuses

Your vehicle may have several inline fuses located in/on the battery cables located in the battery box depending on application.

  • All Allison transmission equipped vehicles have a 10 Amp fuse located in the clean power cables located in the battery box.
  • All vehicles have a 30 Amp fused 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 Hydraulic brake equipped vehicles have a 40 Amp fuse located in the clean power cables located in the battery box and in addition another 30 Amp fuse located in a fuse holder just above the power distribution center located in the vehicles engine compartment.

2012

Passenger Compartment Fuse Panel

Ford F-650 / 750 (2012): Passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2012)
ADescription
120AHorn
215AFlasher relay
320APower point
410AData Link Connector (DLC), Engine diagnostic connector, Parking brake warning
515ARun relay
6-Not used
7-Not used
85ARadio, GEM
95APower window relay
1015AHeated mirrors
115AWiper and washer systems
1210ATransmission shift selector
1320ARadio/SYNC, Power mirrors
1410AInterior lamp relay
1510AInterior lamp relay
1615AHigh beams, Indicator
17-Not used
185ADimmer switch, Interior lighting
1915AEngine control (diesel engine only)
205AStarting system
2110ADRL resistor
2215AAir horn, Air suspension dump, Two-speed axle, Driver-controlled locking differential
2310AFlasher relay
2415AHydraulic brakes relay, Fuel heater relay (diesel engine only), Air dryer
2510ABlower motor relay coil
2610ARight-hand low beam headlight
27-Not used
2810ALeft-hand low beam headlight
2910ACluster, GEM
3015AAllison electronic transmission
3115AMirror fold relay
Relay 1-Interior lamps
Relay 2-Not used
Relay 3-Horn
Relay 4-Not used
Relay 5Not used
Power Distribution Box

Ford F-650 / 750 (2012): Engine compartment fuse box diagram

List of fuses in the power distribution box (2012)
ADescription
120AUpfitter switches (AUX 2 and AUX 4)/Trailer 12V socket pin
230APower seat (driver)
330APower seat (passenger)
415AWindshield washer relay, Washer pump motor
55ABrake warning switch (hydraulic brake only)
620AUpfitter switches (AUX 1 and AUX 3)
715ABrake pressure switches, ABS event relay
820ADEF (Urea), Line heaters (diesel engine only)
920AIgnition switch, Starter cutoff
1015AAir tank moisture removal valve
1130AElectric trailer brake
1220APassenger compartment fuse box 5 and 21
1315AInstrument cluster/Gateway module
1420ANitrogen oxide sensor (diesel engine only)
15-Not used
165ABendix Air ABS
17-Not used
1810AFuel transfer pump
1915APowertrain control module power 1 (gasoline engine only)
2010APowertrain control module power 2 (gasoline engine only)
2120APowertrain control module power 3 (gasoline engine only)
2220APowertrain control module power 4 (gasoline engine only)
23-Not used
2410APowertrain control module keep-alive power (gasoline engine only)
10130ABendix Air ABS relay (Air brake vehicles only)
Hydraulic brakes module (Hydraulic brake vehicles only)
10220AIgnition switch
10320AIgnition switch, Passenger compartment fuse box fuses 19, 29 and 30
10420APower point
10520APower door lock switches
10630AMain light switch, Multi-function switch
10750APassenger compartment fuse box fuses 1,2, 3, 4, 12, 13, 14 and 15
10840AFuel heater (diesel engine only)
20AFuel pump module (gasoline engine only)
10940APower window
11030AWindshield wiper
11130ABody builder relay, Parking lamps
11240ABlower motor
11330AHeated seats, Air-Ride seat
11420AAftertreatment DCU
11520AIgnition switch, Passenger compartment fuse box fuses 8, 9, 10 and 11
11630ALeft/Right turn relays, Back-up lamp relay
11720AStoplamps
11860AHydraulic brake vehicles (Trailer tow package only)
60160ATrailer socket
60260AAir brake trailer tow fuse block
30AHydraulic brakes pump motor 2
201-Windshield washer relay
202-Wiper high/low relay
203-Wiper run/park relay
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 stoplamp 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
992530AHydraulic brakes pump motor 1

Relay Center

The relay center is located along the passenger side A-pillar on the right side of the footwell.

Ford F-650 / 750 (2012): relay box diagram

Relay Center (2012)
Description
R1Spring applied hydraulic release warning chime module or PCM power VPWR 2, 3 and 4
R2A/C compressor clutch
R3Power Windows
R4Flasher (standard/LED)
R5Upfitter relay 1
R6Upfitter relay 2
R7Headlights
R8Spare
R9Upfitter relay 3
R10Starter
R11DCU (diesel engine only)
R12Two-speed axle/Differential lock
R13Door lock
R14Air tank moisture valve
R15DRL #1
R16Heated mirrors
R17Spare
R18Upfitter relay 4
R19Shift interlock/EPRNDL display
R20Selective Catalyst Reduction (SCR) system (NOx) (diesel engine only)
R21Run
R22Door unlock
R23ABS warning indicator
R24DRL #2
R25Park lights
R26Spare

Trailer Tow Relays (If Equipped)

Ford F-650 / 750 (2012): relay box diagram

Trailer Tow Relays (If Equipped) (2012)
ADescription
130A*Trailer tow ABS feed (non electric trailer brake vehicles only)
230A*Trailer tow park/marker lamps
330A*Trailer tow stop lamps
430A*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/on the battery cables located in the battery box depending on application.

  • All Allison transmission equipped vehicles have a 10 Amp fuse located in the clean power cables located in the battery box.
  • All vehicles have a 30 Amp fused 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 Hydraulic brake equipped vehicles have a 40 Amp fuse located in the clean power cables located in the battery box and in addition another 30 Amp fuse located in a fuse holder just above the power distribution center located in the vehicles engine compartment.

2013

Passenger Compartment Fuse Panel

Ford F-650 / 750 (2013): Passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2013)
AProtected Circuits
120AHorn
215AFlasher relay
320APower point
410AData Link Connector (DLC), Engine diagnostic connector, Parking brake warning
515ARun relay
6-Not used
7-Not used
85ARadio, GEM
95APower window relay
1015AHeated mirrors
115AWiper and washer systems
1210ATransmission shift selector
1320ARadio/SYNC, Power mirrors
1410AInterior lamp relay
1510AInterior lamp relay
1615AHigh beams, Indicator
17-Not used
185ADimmer switch, Interior lighting
1915AEngine control (diesel engine only)
205AStarting system
2110ADRL resistor
2215AAir horn, Air suspension dump, Two-speed axle, Driver-controlled locking differential
2310AFlasher relay
2415AHydraulic brakes relay, Fuel heater relay (diesel engine only), Air dryer
2510ABlower motor relay coil
2610ARight-hand low beam headlight
27-Not used
2810ALeft-hand low beam headlight
2910ACluster, GEM
3015AAllison electronic transmission
3115AMirror fold relay
Relay 1-Interior lamps
Relay 2-Not used
Relay 3-Horn
Relay 4-Not used
Relay 5-Not used
Power Distribution Box

Ford F-650 / 750 (2013): Engine compartment fuse box diagram

List of fuses in the power distribution box (2013)
AProtected Circuits
120AUpfitter switches (AUX 2 and AUX 4)/Trailer 12V socket pin
230APower seat (driver)
330APower seat (passenger)
415AWindshield washer relay, Washer pump motor
55ABrake warning switch (hydraulic brake vehicles only)
620AUpfitter switches (AUX 1 and AUX 3)
715ABrake pressure switches, ABS event relay
820ADEF (Urea) line heaters (diesel engine only)
920AIgnition switch, Starter cutoff
1015AAir tank moisture removal valve
1130AElectric trailer brake
1220APassenger compartment fuse box 5 and 21
1315AInstrument cluster/Gateway module
1420ANitrogen oxide sensor (diesel engine only)
15-Not used
165ABendix Air ABS
17-Not used
1810AFuel transfer pump
1915APowertrain control module power 1 (gasoline engine only)
2010APowertrain control module power 2 (gasoline engine only)
2120APowertrain control module power 3 (gasoline engine only)
2220APowertrain control module power 4 (gasoline engine only)
23-Not used
2410APowertrain control module keep-alive power (gasoline engine only)
10130ABendix Air ABS relay (Air brake vehicles only)
Hydraulic brakes module (hydraulic brake vehicles only)
10220AIgnition switch
10320AIgnition switch, Passenger compartment fuse box fuses 19, 29 and 30
10420APower point
10520APower door lock switches
10630AMain light switch, Multi-function switch
10750APassenger compartment fuse box fuses 1,2, 3, 4, 12, 13, 14 and 15
10840AFuel heater (diesel engine only)
20AFuel pump module (gasoline engine only)
10940APower window
11030AWindshield wiper
11130ABody builder relay, Parking lamps
11240ABlower motor
11330AHeated seats, Air-Ride seat
11420AAftertreatment DCU
11520AIgnition switch, Passenger compartment fuse box fuses 8, 9, 10 and 11
11630ALeft/Right turn relays, Back up lamp relay
11720AStop lamps
11860AHydraulic brake vehicles (trailer tow package only)
60160ATrailer socket
60260AAir brake trailer tow fuse block
30AHydraulic brakes pump motor 2
201-Windshield washer relay
202-Wiper high/low relay
203-Wiper run/park relay
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
992530AHydraulic brakes pump motor 1

Relay Center

The relay center is located along the passenger side A-pillar on the right side of the footwell.

Ford F-650 / 750 (2013): relay box diagram

Relay Center (2013)
Relay Description
R1Spring applied hydraulic release warning chime module or PCM power VPWR 2, 3 and 4
R2A/C compressor clutch
R3Power Windows
R4Flasher (standard/LED)
R5Upfitter relay 1
R6Upfitter relay 2
R7Headlights
R8Spare
R9Upfitter relay 3
R10Starter
R11DCU (diesel engine only)
R12Two-speed axle/Differential lock
R13Door lock
R14Air tank moisture valve
R15DRL #1
R16Heated mirrors
R17Spare
R18Upfitter relay 4
R19Shift interlock/EPRNDL display
R20Selective Catalyst Reduction (SCR) system (NOx) (diesel engine only)
R21Run
R22Door unlock
R23ABS warning indicator
R24DRL #2
R25Park lights
R26Spare

Trailer Tow Relays (If Equipped)

Ford F-650 / 750 (2013): relay box diagram

Trailer Tow Relays (If Equipped) (2013)
AProtected Circuits
130A*Trailer tow ABS feed (non electric trailer brake vehicles only)
230A*Trailer tow park/marker lamps
330A*Trailer tow stop lamps
430A*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/on the battery cables located in the battery box depending on application.

  • All Allison transmission equipped vehicles have a 10 Amp fuse located in the clean power cables located in the battery box.
  • All vehicles have a 30 Amp fused 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 Hydraulic brake equipped vehicles have a 40 Amp fuse located in the clean power cables located in the battery box and in addition another 30 Amp fuse located in a fuse holder just above the power distribution center located in the vehicles engine compartment.

2015

Passenger Compartment Fuse Panel

Ford F-650 / 750 (2015): Passenger compartment fuse panel diagram

List of fuses in the passenger compartment fuse panel (2015)
AProtected Circuits
120AHorn
215AFlasher relay
320APower point
410AData Link Connector (DLC), Engine diagnostic connector, Parking brake warning
515ARun relay
6-Not used
7-Not used
85ARadio, GEM
95APower window relay
1015AHeated mirrors
115AWiper and washer systems
1210ATransmission shift selector
1320ARadio/SYNC, Power mirrors
1410AInterior lamp relay
1510AInterior lamp relay
1615AHigh beams, Indicator
17-Not used
185ADimmer switch, Interior lighting
1915AEngine control (diesel engine only)
205AStarting system
2110ADRL resistor
2215AAir horn, Air suspension dump, Two-speed axle, Driver-controlled locking differential
2310AFlasher relay
2415AHydraulic brakes relay, Fuel heater relay (diesel engine only), Air dryer
2510ABlower motor relay coil
2610ARight-hand low beam headlight
27-Not used
2810ALeft-hand low beam headlight
2910ACluster, GEM
3015AAllison electronic transmission
3115AMirror fold relay
Relay 1-Interior lamps
Relay 2-Not used
Relay 3-Horn
Relay 4-Not used
Relay 5Not used
Power Distribution Box

Ford F-650 / 750 (2015): Engine compartment fuse box diagram

List of fuses in the power distribution box (2015)
AProtected Circuits
120AUpfitter switches (AUX 2 and AUX 4)/Trailer 12V socket pin
230APower seat (driver)
330APower seat (passenger)
415AWindshield washer relay, Washer pump motor
55ABrake warning switch (hydraulic brake vehicles only)
620AUpfitter switches (AUX 1 and AUX 3)
715ABrake pressure switches, ABS event relay
820ADEF (Urea) line heaters (diesel engine only)
920AIgnition switch, Starter cutoff
1015AAir tank moisture removal valve
1130AElectric trailer brake
1220APassenger compartment fuse box 5 and 21
1315AInstrument cluster/Gateway module
1420ANitrogen oxide sensor (diesel engine only)
15-Not used
165ABendix Air ABS
17-Not used
1810AFuel transfer pump
1915APowertrain control module power 1 (gasoline engine only)
2010APowertrain control module power 2 (gasoline engine only)
2120APowertrain control module power 3 (gasoline engine only)
2220APowertrain control module power 4 (gasoline engine only)
23-Not used
2410APowertrain control module keep-alive power (gasoline engine only)
10130ABendix Air ABS relay (Air brake vehicles only)
Hydraulic brakes module (hydraulic brake vehicles only)
10220AIgnition switch
10320AIgnition switch, Passenger compartment fuse box fuses 19, 29 and 30
10420APower point
10520APower door lock switches
10630AMain light switch, Multi-function switch
10750APassenger compartment fuse box fuses 1,2, 3, 4, 12, 13, 14 and 15
10840AFuel heater (diesel engine only)
20AFuel pump module (gasoline engine only)
10940APower window
11030AWindshield wiper
11130ABody builder relay, Parking lamps
11240ABlower motor
11330AHeated seats, Air-Ride seat
114-Not used
11520AIgnition switch, Passenger compartment fuse box fuses 8, 9, 10 and 11
11630ALeft/Right turn relays, Back up lamp relay
11720AStop lamps
11860AHydraulic brake vehicles (trailer tow package only)
60160ATrailer socket
60260AAir brake trailer tow fuse block
201-Windshield washer relay
202-Wiper high/low relay
203-Wiper run/park relay
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
992530AHydraulic brakes pump motor 1

Relay Center

The relay center is located along the passenger side A-pillar on the right side of the footwell.

Ford F-650 / 750 (2015): relay box diagram

Relay Center (2015)
Relay Description
R1Spring applied hydraulic release warning chime module or PCM power VPWR 2, 3 and 4
R2A/C compressor clutch
R3Power Windows
R4Flasher (standard/LED)
R5Upfitter relay 1
R6Upfitter relay 2
R7Headlights
R8Cummins starter lockout
R9Upfitter relay 3
R10Starter
R11DCU (diesel engine only)
R12Two-speed axle/Differential lock
R13Door lock
R14Air tank moisture valve
R15DRL #1
R16Heated mirrors
R17Spare
R18Upfitter relay 4
R19Shift interlock/EPRNDL display
R20Selective Catalyst Reduction (SCR) system (NOx) (diesel engine only)
R21Run
R22Door unlock
R23ABS warning indicator
R24DRL #2
R25Park lights
R26Spare

Trailer Tow Relays (If Equipped)

Ford F-650 / 750 (2015): relay box diagram

Trailer Tow Relays (If Equipped) (2015)
AProtected Circuits
130A*Trailer tow ABS feed (non electric trailer brake vehicles only)
230A*Trailer tow park/marker lamps
330A*Trailer tow stop lamps
430A*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 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.