Diagrams of fuse and relay boxes – Ford F-750

Applies to vehicles manufactured in the years:

2016, 2017, 2018, 2019, 2020.

Diagram of the fuse box in the passenger compartment

The fuse panel is located in the passenger footwell. Pull the fuse panel cover towards you to remove it. When the panel clips are unhooked, the panel can fall easily.

Number	Amperes [A]	Description
1	thirty	Left windshield motor
2	15	Upfitter relay # 4
3	thirty	Right windshield motor
4	10	Internal lamps
5	–	–
6	–	–
7	7.5	Mirror power switch
8	–	–
9	10	Upfitter relay # 3
10	10	Customer access for commissioning / accessories
11	10	Ford telematics battery power supply
12	15	Indoor lighting
13	15	Right turn lamps and brake lamps
14	15	Left turn lamps and brake lamps
15	15	Center high mounted brake light, reversing lights
16	10	Right low beam headlight
17	10	Left headlight dipped beam
18	10	Wake up powertrain control module, brake shift lockout
19	–	–
20	20	Electric door locks
21	10	Brake on / off switch
22	20	Horn
23	15	Instrument cluster
24	15	Diagnostic connector, power folding mirrors relay, steering wheel control module, remote keyless entry
25	–	–
26	5	Steering wheel control module
27	–	–
28	15	Ignition switch
29	20	GPS module, Radio, SYNC
30	15	Park lamps, trailer tow lamp park lamp relay coil
31	5	Customer Trailer Brake On / Off Switch
32	15	Delayed accessory power supply, driver and passenger door lock switch illumination, 11 Ov power inverter module, telescopic mirror switch
33	–	–
34	10	Run / run translator auxiliary module
35	5	Towing / Towage / Take-off
36	10	Fuel tank select switch
37	10	Auxiliary heater
38	10	Accessory delayed power supply, AM / FM basic radio
39	15	Left and right headlight main beam
40	10	Rear parking lamps, marker lamps
41	–	–
42	5	Ford telematics run / start
43	10	Power Distribution Box / Accessory Fuses, Wiper Relay Coil
44	10	Customer access upfitter switch power supply, auxiliary gear translator module / accessory sensor;
45	–	–
46	10	Air conditioning module
47	15	Fender turn signal lamps
48	thirty	Circuit Switch: Power Window Switch (Crew Cab)
Relay
49	Delayed power of accessories

Diagram of the fuse box in the engine compartment

The power distribution box is located in the engine compartment.

Number	Amperes [A]	Description
6	–	–
7	–	–
8	20	Air passenger seat compressor
9	–	–
10	–	–
11	–	–
12	–	–
13	–	Resistor: Terminator (120 ohms)
14	–	–
15	–	–
16	–	–
17	–	–
18	–	–
19	10	Brake on / off isolation relay
20	–	–
21	–	–
22	thirty	Electric brake controller for trailer towing
23	40	Blower motor
24	–	–
25	thirty	Wipers
26	thirty	Trailer tow lamps
27	25	Urea heaters (diesel engine)
28	–	–
32	–	–
33	20	Vehicle power 1
34	20	Vehicle power 2
35	10	Vehicle power 3
36	20	Vehicle power 4
37	10	Vehicle power 5 (diesel engine)
39	–	–
40	15	Heated mirrors
41	–	–
42	20	Stop lamps for trailer towing and superstructures
43	–	–
44	20	Additional translator module
45	10	Run / run relay coil
46	10	Transmission control module (diesel engine) hold power
47	10	Air conditioning clutch
49	20	Dehumidifier
50	10	Blower motor relay coil
51	–	–
52	10	Powertrain control module start / start (diesel engine), Transmission control module start / start (diesel engine)
53	–	–
54	10	Activation / activation of the anti-lock braking system
55	10	Seat compressor relay coil, Chassis solenoids relay coil, Heated mirror relay coil
56	20	Passenger compartment fuse panel activated / energized starting
58	5	Wiper relay
59	5	Chassis solenoid relay, air seat compressor relay
60	–	–
61	–	–
62	–	–
63	10	Chassis solenoids
64	–	–
65	10	Cargo box lamp
66	thirty	Fuel pump
67	–	–
68	10	Fuel pump relay coil
69	–	–
70	10	Reversing lamps for towing a trailer or bodywork
71	–	–
72	10	Powertrain control module relay coil, backup power
73	5	Hydromax monitor
80	–	–
81	–	–
82	20	Auxiliary power point # 2
83	20	Auxiliary power point # 1
84	20	Air driver seat compressor
85	60	Hydromax pump
86	thirty	Anti-lock braking system modulator valves
87	–	–
88	–	–
89	40	Starter
90	thirty	Trailer battery supply (air brakes)
		Charging the trailer tow battery (hydraulic brakes)
92	–	–
93	–	–
94	25	Upfitter relay # 1
95	25	Upfitter relay # 2
96	60	Anti-lock brake system pump (hydraulic brakes)
97	–	–
98	–	–
99	40	Instrument panel 110 V power converter
100	thirty	Trailer turning lamps relays
Relay
1	Blower motor
2	Stop lamps for trailer towing and superstructures
3	Urea heaters (diesel engine)
4	Air driver seat compressor
5	Heated mirrors
29	Trailer tow lamps
30	Air conditioning clutch
31	Wipers
38	Powertrain control module
48	Run / start
57	Fuel pump
74	Chassis solenoids
75	–
76	–
77	Brake switch insulation (hydraulic brakes)
78	–
79	–
91	Cargo box lamp
101	Starter
102	Trailer Battery Charging Relay (Hydraulic Brakes)
	Trailer battery supply (air brakes)
103	Trailer tow lamps right-hand side and brake lamps
104	Trailer tow lamps left and brake lamps
105	–
106	Trailer towing hazard lamps relay
107	Passenger seat compressor relay