Engine Compartment Fuse Box
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.
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
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
| A B C D E F G H |