2021 Ford F-53 Motorhome Fuse Box Diagram

Engine Compartment Fuse Box

WARNING:  Always disconnect the battery before servicing high current fuses. 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 engine compartment fuse 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 need to reset some features. 

Fuse Number	Fuse Rating	Protected Component
1	20 A	Horn.
2	50 A	Blower motor.
3	—	Not used.
4	30 A	Starter relay.
5	—	Not used.
6	—	Not used.
8	—	Not used.
10	—	Not used.
12	—	Not used.
13	10 A	Run/start feed climate controls.
14	10 A	Adaptive cruise control relay (commercial stripped chassis).   Not used (spare) (Motorhome stripped chassis).
15	—	Not used.
16	—	Not used.
17	10 A	Powertrain control module run/start feed.
18	10 A	Anti-lock brake system run/start feed.
19	—	Not used.
20	40 A	Wiper power.
21	—	Not used.
22	10 A	Wiper module.
23	—	Not used.
24	40 A	Body control module – battery power in feed 2.
25	50 A	Body control module – battery power in feed 1.
26	—	Not used.
27	20 A	B+ to body builder connector.
28	—	Not used.
29	10 A	Alternator 1 A-line.
30	—	Not used.
31	60 A	Hydromax pump relay.
32	20 A	Vehicle power 1.
33	20 A	Vehicle power 2.
34	10 A	Vehicle power 3.
35	20 A	Vehicle power 4.
36	—	Not used.
37	—	Not used.
38	10 A	Wiper washer.
39	—	Not used.
41	30 A	Trailer brake control connector.
43	30 A	B+ to body builder connector.
45	—	Not used.
46	10 A	A/C clutch.
47	—	Not used.
48	20 A	Run/accessory to body builder connector.
49	30 A	Pump electronics module.
50	15 A	Injector.
51	20 A	Auxiliary power point.
52	—	Not used.
53	30 A	Trailer tow park lamps.
54	40 A	Upfitter run/start feed.
55	—	Not used.
56	20 A	Auxiliary power point.
58	5 A	USB smart charger.
59	—	Not used.
60	—	Not used.
61	—	Not used.
62	—	Not used.
63	—	Not used.
64	—	Not used.
65	—	Not used.
66	—	Not used.
67	10 A	Brake on-off isolation relay.
69	—	Not used.
70	—	Not used.
71	30 A	Anti-lock brake system valves.
72	10 A	Not used (spare).
73	—	Not used.
74	—	Not used.
75	—	Not used.
76	60 A	B+ to body control module.
77	30 A	Voltage quality module power – body control module.
78	10 A	Trailer tow stop lamps.
79	5 A	Hydromax pump monitor.
80	10 A	Trailer tow backup lamps.
81	—	Not used.
82	—	Not used.
83	—	Not used.
84	—	Not used.
85	—	Not used.
86	—	Not used.
87	—	Not used.
88	—	Not used.
89	—	Not used.
91	40 A	B+ to body builder connector.
93	—	Not used.
94	—	Not used.
95	20 A	Stop lamp relay.   Trailer brake controller.
96	—	Not used.
97	50 A	Not used (spare).
98	30 A	Trailer tow battery charge.
99	—	Not used.
100	—	Not used.
101	—	Not used.
102	—	Not used.
103	—	Not used.
104	—	Not used.
105	15 A	Trailer tow right-hand and left-hand stop and direction indicator relay power.

Note:   Spare fuse amperage may vary.

Relay Number	Fuse Rating	Protected Component
R02	—	Not used.
R05	—	Not used.

Passenger Compartment Fuse Box

This fuse panel is below and to the left-hand side of the steering wheel near the brake pedal. Remove the panel cover to access the fuses.To remove a fuse, use the fuse panel cover’s fuse puller tool.Replace fuses with the same type and rating. 

WARNING:  Always disconnect the battery before servicing high current fuses.

Note:   If your vehicle has dual batteries, disconnecting the primary under-hood battery does not remove power from all circuits.

Fuse Number	Fuse Rating	Protected Component
1	—	Not used.
2	10 A	Run/accessory radio feed to body builder.
3	—	Not used.
4	20 A	B+ feed to body builder connector.
5	—	Not used.
6	10 A	Not used.
7	10 A	Smart datalink connector.
8	—	Not used.
9	—	Not used.
10	—	Not used.
11	—	Not used.
12	7.5 A	Brake on-off switch.
13	7.5 A	Smart datalink connector.
14	15 A	Not used (spare).
15	15 A	Not used (spare).
16	—	Not used.
17	7.5 A	Not used.
18	7.5 A	Yaw sensor.
19	5 A	Telematics control unit module.
20	5 A	Ignition switch.
21	5 A	Not used.
22	5 A	Not used (spare).
23	30 A	Not used (spare).
24	30 A	Not used (spare).
25	20 A	Not used (spare).
26	30 A	Not used (spare).
27	30 A	Not used (spare).
28	30 A	Not used (spare).
29	15 A	Not used (spare).
30	5 A	Brake on-off signal to 14A348.
31	10 A	Instrument cluster.   Steering column control module.
32	20 A	Not used (spare).
33	—	Not used.
34	30 A	Not used (spare).
35	5 A	Tow haul switch.
36	15 A	Camera lane departure warning (commercial stripped chassis).   Not used (spare) (Motorhome stripped chassis).
37	20 A	B+ to body builder connector.
38	30 A	Not used (spare).

Note:   Spare fuse amperage may vary.

2021 Ford Motorhome F-53 Owners Manual

Changing a Fuse

Fuses

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

AMicro 2. BMicro 3. CMaxi. DMini. EM Case. FJ Case. GJ Case Low Profile. HSlotted M Case.