Ford F-350 2003 Fuse Box Info
Fuse box location:
The fuse box is located below and to the left of the steering wheel by the brake pedal.
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | 15A | Adjustable pedals |
| 2 | 20A | Not used |
| 3 | 20A | Not used |
| 4 | 20A | Power point - instrument panel |
| 5 | 20A | Not used |
| 6 | 20A | Trailer tow turn/stop relay |
| 7 | 30A | High beam headlamps / Flash to pass |
| 8 | - | Not used |
| 9 | 20A | Not used |
| 10 | 10A | A/C clutch |
| 11 | 20A | Radio (main) |
| 12 | 20A | Cigar lighter / OBD II |
| 13 | 5A | Power mirrors/switches |
| 14 | 15A | Daytime running lamps (DRL) |
| 15 | 10A | Not used |
| 16 | 15A | Not used |
| 17 | 15A | Exterior lamps |
| 18 | 20A | Turn lamps / Brake on-off switch (high) |
| 19 | 10A | Body security module/4x4 module |
| 20 | - | Not used |
| 21 | 25A | Not used |
| 22 | 20A | Engine control |
| 23 | 20A | Engine control (gasoline engine only) |
| 24 | 15A | Not Used |
| 25 | 10A | 4-Wheel Anti-Lock Brake System (4WABS) module |
| 26 | 10A | Airbags |
| 27 | 15A | Ignition switch Run feed |
| 28 | 10A | EATC module/Front blower relaycoil |
| 29 | 10A | Customer access |
| 30 | 15A | Highbeam headlamps |
| 31 | 15A | Clutch interlock switch (manual transmissions only), Transmission range sensor (automatic transmissions only) then to starter relay coil (all transmissions) |
| 32 | 5A | Radio (start) |
| 33 | 15A | Front wiper |
| 34 | 10A | Brake on-off switch |
| 35 | 10A | Instrument cluster |
| 36 | 10A | PCM Keep-Alive |
| 37 | 15A | Horn |
| 38 | 20A | Trailer tow park lamps and backup lamps |
| 39 | - | Not used |
| 40 | 20A | Fuel pump |
| 41 | 10A | Instrument cluster |
| 42 | 15A | Delayed accessory |
| 43 | 10A | Fog lamps |
| 44 | 10A | Not used |
| 45 | 10A | Ignition switch Run/Start feed |
| 46 | 10A | Left-hand lowbeam |
| 47 | 10A | Right-hand lowbeam |
| 48 | 10A | Not used |
| 101 | 30A | Trailer to electric brake |
| 102 | 30A | Door locks/Body security module |
| 103 | 50A | Ignition switch |
| 104 | 40A | Not used |
| 105 | 30A | Injector driver module (Diesel engine only) |
| 106 | 30A | Front wiper main |
| 107 | 40A | Front blower motor |
| 108 | 40A | Not used |
| 109 | 30A | Heated seats |
| 110 | 50A | Ignition switch |
| 111 | 30A | 4WD/Shift on the fly |
| 112 | 30A | Left-hand power seats |
| 113 | 30A | Starter motor |
| 114 | 30A | Right-hand power seats |
| 115 | 20A | Trailer tow battery charge |
| 116 | 30A | Ignition switch |
| 601 | 30A | Door window motors |
| 602 | 60A | 4WABS module |
| 210 | - | Not used |
| 211 | - | Not used |
| 212 | - | Not used |
| 301 | - | Front blower motor relay |
| 302 | - | Powertrain (EEC) relay |
| 303 | - | Injector driver module relay(Diesel engine only) |
| 304 | - | Not used |
| 305 | - | Trailer tow battery charge relay |
| 306 | - | Delayed accessory relay |
| 307 | - | Starter relay |
