2018 Ford F-650/750 Fuse Box Diagram

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1 FUSE SPECIFICATION CHART
2 CHANGING A FUSE

FUSE SPECIFICATION CHART

Power Distribution Box

WARNING   WARNING:  Always disconnect the battery before servicing high current fuses.
WARNING   WARNING:  To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.

The power distribution box is in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.If you disconnect and reconnect the battery, you will need to reset some features.   See   Changing the 12V Battery. 

Fuse or Relay Number  Fuse Rating  Protected Components  
1  Relay  Blower motor.  
2  Relay  Trailer tow and body builder stoplamps.  
3  Relay  Urea heaters (diesel engine).  
4  Relay  Driver air ride seat compressor.  
5  Relay  Heated mirrors.  
6  —  Not used.  
7  —  Not used.  
8  20A1  Passenger air ride seat compressor.  
9  —  Not used.  
10  —  Not used.  
11  —  Not used.  
12  —  Not used.  
13  Resistor  Terminating resistor (120 ohm).  
14  —  Not used.  
15  —  Not used.  
16  —  Not used.  
17  —  Not used.  
18  —  Not used.  
19  10A2  Brake on/off isolation relay.  
20  —  Not used.  
21  —  Not used.  
22  30A1  Trailer tow electric brake controller.  
23  40A1  Blower motor.  
24  —  Not used.  
25  30A1  Wipers.  
26  30A1  Trailer tow park lamps.  
27  25A1  Urea heaters (diesel engine).  
29  Relay  Trailer tow park lamps.  
30  Relay  A/C clutch.  
31  Relay  Wipers.  
32  —  Not used.  
33  20A2  Vehicle power 1.  
34  20A2  Vehicle power 2.  
35  10A2  Vehicle power 3.  
36  20A2  Vehicle power 4.  
37  10A2  Vehicle power 5 (diesel engine).  
38  Relay  Powertrain control module.  
39  —  Not used.  
40  15A2  Heated mirrors.  
41  —  Not used.  
42  20A2  Trailer tow and body builder stoplamps.  
43  —  Not used.  
44  20A2  Ancillary translator module.  
45  10A2  Run/start relay coil.  
46  10A2  Transmission control module keep-alive power (diesel engine).  
47  10A2  A/C clutch.  
48  Relay  Run/start.  
49  20A2  Air dryer.  
50  10A2  Blower motor relay coil.  
51  —  Not used.  
52  10A2  Powertrain control module run/start (diesel engine).   Transmission control module run/start (diesel engine).  
53  —  Not used.  
54  10A2  Anti-lock brake system run/start.  
55  10A2  Seat compressor relay coil.   Chassis solenoids relay coil.   Heated mirror relay coil.  
56  20A2  Passenger compartment fuse panel run/start feed.  
57  Relay  Fuel pump.  
58  5A2  Wiper relay.  
59  5A2  Chassis solenoid relay.   Air ride seat compressor relay.  
60  —  Not used.  
61  —  Not used.  
62  —  Not used.  
63  10A2  Chassis solenoids.  
64  —  Not used.  
65  10A2  Cargo box lamp.  
66  30A2  Fuel pump.  
67  —  Not used.  
68  10A2  Fuel pump relay coil.  
69  —  Not used.  
70  10A2  Trailer tow or body builder backup lamps.  
71  —  Not used.  
72  10A2  Powertrain control module relay coil.   Keep-alive power.  
73  5A2  Hydromax monitor.  
74  Relay  Chassis solenoids.  
75  —  Not used.  
76  —  Not used.  
77  Relay  Brake switch isolation (hydraulic brakes).  
78  —  Not used.  
79  —  Not used.  
80  —  Not used.  
81  —  Not used.  
82  20A1  Auxiliary power point #2.  
83  20A1  Auxiliary power point #1.  
84  20A1  Driver air ride seat compressor.  
85  60A1  Hydromax pump.  
86  30A1  Anti-lock brake system modulator valves.  
87  —  Not used.  
88  —  Not used.  
89  40A1  Starter motor  
90  30A1  Trailer battery feed (air brakes).   Trailer tow battery charge (hydraulic brakes).  
91  Relay  Cargo box lamp.  
92  —  Not used.  
93  —  Not used.  
94  25A1  Upfitter relay #1.  
95  25A1  Upfitter relay #2.  
96  60A1  Anti-lock brake system pump (hydraulic brakes).  
97  —  Not used.  
98  —  Not used.  
99  40A1  Instrument panel 110 volt power inverter.  
100  30A1  Trailer tow turn lamp relays.  
101  Relay  Starter.  
102  Relay  Trailer tow battery charge relay (U-Haul).   Trailer tow battery feed (air brakes).  
103  Relay  Trailer tow right hand side turn and stop lamps.  
104  Relay  Trailer tow left hand side turn and stop lamps.  
105  —  Not used.  
106  Relay  Trailer tow backup lamps relay.  
107  Relay  Passenger air ride seat compressor relay.  

1J-case fuse.2Mini fuse.

Passenger Compartment Fuse Panel

The fuse panel is in the passenger footwell. Remove the panel cover to access the fuses.Pull the fuse panel cover toward you to remove it. When the clips of the panel disengage, let the panel fall easily. Use the provided fuse puller tool to remove a fuse. It is on the fuse panel cover.

Fuse or Relay Number  Fuse Rating  Protected Components  
1  30A  Left front window motor.  
2  15A  Upfitter relay #4.  
3  30A  Right front window motor.  
4  10A  Interior lamps.  
5  20A  Not used (spare).  
6  5A  Not used (spare).  
7  7.5A  Power mirror switch.  
8  10A  Not used (spare).  
9  10A  Upfitter relay #3.  
10  10A  Not used (spare).  
11  10A  Ford telematics battery feed.  
12  15A  Interior lighting.  
13  15A  Right turn and brake lamps.  
14  15A  Left turn and brake lamps.  
15  15A  Center high-mounted stop lamp.   Backup lamps.  
16  10A  Right headlamp low beam.  
17  10A  Left headlamp low beam.  
18  10A  Powertrain control module wakeup.   Brake shift interlock.  
19  20A  Not used (spare).  
20  20A  Power door locks.  
21  10A  Brake on/off switch.  
22  20A  Horn.  
23  15A  Instrument cluster.  
24  15A  Diagnostic connector.   Power fold mirror relay.   Steering wheel control module.   Remote keyless entry.  
25  15A  Not used (spare).  
26  5A  Steering wheel control module.  
27  20A  Not used (spare).  
28  15A  Ignition switch.  
29  20A  Radio.   SYNC.  
30  15A  Parking lamps.   Trailer tow parking lamps relay coil.  
31  5A  Customer access trailer brake on/off switch.  
32  15A  Delayed accessory power.   Driver and passenger door lock switch illumination.   110 volt power inverter module.   Telescoping mirror switch.  
33  10A  Not used (spare).  
34  10A  Ancillary translator module run/start.  
35  5A  Tow/Haul run/start.  
36  10A  Fuel tank select switch.  
37  10A  Auxiliary heater.  
38  10A  Delayed accessory power.   AM/FM base radio.  
39  15A  Left and right headlamp high beam.  
40  10A  Rear parking lamps.   Clearance lamps.  
41  7.5A  Not used (spare).  
42  5A  Ford telematics run/start.  
43  10A  Power Distribution Box run/accessory fuses.   Wiper relay coil.  
44  10A  Customer access upfitter switch power.   Ancillary translator module run/accessory sense.  
45  5A  Not used (spare).  
46  10A  Climate control module.  
47  15A  Fender direction indicator lamps.  
48  30A Circuit breaker  Power windows switch (crew cab).  
49  Relay  Delayed accessory power.  

CHANGING A FUSE

Fuses

WARNING   WARNING:  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.

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.

Fuse Types

Callout  Fuse Type  
A  Micro 2  
B  Micro 3  
C  Maxi  
D  Mini  
E  M Case  
F  J Case  
G  J Case Low Profile  

To download the complete user manual, please download the following file:

https://www.fordservicecontent.com/Ford_Content/vdirsnet/OwnerManual/Home/Index?Variantid=4700&languageCode=EN&countryCode=USA&marketCode=US&bookcode=O40467&VIN=&userMarket=usa&div=f

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