In this article, we’re going to take a close look at the 2004 Ford F150 fuse box diagram. We’ll break down the details and explain what each fuse does, making it easier for you to understand and navigate your electrical system with confidence.
Table of Contents
2004 Ford F150 Passenger compartment fuse panel/power distribution box
Note: In the event that you need to disconnect and reconnect the battery, it's important to note that certain features may require resetting. This step is necessary to restore their functionality.
* Mini fuses/ ** Cartridge fuses.
| Fuse/RelayLocation | Fuse AmpRating | Passenger Compartment FusePanel Description |
| 1 | 10A* | Run/Accessory – Wipers, Instrument cluster |
| 2 | 20A* | Stop/Turn lamps, Speed control deactivate switch |
| 3 | 5A* | Power mirrors, Memory logic power, Memory seats, and pedals |
| 4 | 10A* | DVD battery power |
| 5 | 7.5A* | Keep alive memory for Powertrain Control Module (PCM) and climate control module |
| 6 | 15A* | Parklamps, BSM, Instrument panel illumination |
| 7 | 5A* | Radio (start signal) |
| 8 | 10A* | Heated mirrors, Switch indicator |
| 9 | — | Not used |
| 10 | 20A* | Trailer tow backup lamps relay (PCB1), Trailer tow park lamp relay (R201) |
| 11 | 10A* | A/C clutch, 4×4 solenoid |
| 12 | — | Not used |
| 13 | 10A* | Climate control module power |
| 14 | 10A* | Back-up lamp and DaytimeRunning Lamps (DRL) relay coil, A/C pressure switch, Brake-shift interlock solenoid, Heated PCV |
| 15 | 5A* | Overdrive cancel, Cluster, Brake-Shift Interlock (BSI) |
| 16 | 10A* | ABS module (Run/Start power) |
| 17 | 15A* | Fog lamp relay (R202) |
| 18 | 10A* | Run/Start feed – Flasher relay, Electrochromatic mirror, Heated seats, BSM, Compass, RSS (Reverse Sensing System) |
| 19 | 10A* | Restraints (Airbag module) |
| 20 | 15A* | PCM 4×4 power |
| 21 | 15A* | Cluster keep alive power |
| 22 | 10A* | Delayed accessory power for audio, power door lock switch, and moonroof switch illumination |
| 23 | 10A* | RH low beam headlamp |
| 24 | 15A* | Battery saver power for demand lamps |
| 25 | 10A* | LH low beam headlamp |
| 26 | 20A* | Horn relay (PCB3), Horn power |
| 27 | 5A* | Passenger Airbag Deactivation (PAD) warning lamp, Cluster airbag warning lamp, Cluster RUN/START power |
| 28 | 5A* | SecuriLock transceiver (PATS) |
| 29 | 15A* | PCM 4×4 power |
| 30 | — | Not used |
| 31 | 20A* | Radio power |
| 32 | 15A* | Vapor Management Valve (VMV), A/C clutch relay, Canister vent, Heated Exhaust Gas Oxygen(HEGO) sensors #11 and #21, CMCV, Mass Air Flow (MAF) sensor, VCT |
| 33 | 15A* | Shift solenoid, CMS #12 and #22 |
| 34 | 20A* | Fuel injectors and PCM power |
| 35 | 20A* | Instrument cluster high beam indicator, High beam headlamps |
| 36 | 10A* | Trailer tow right turn/stop lamps |
| 37 | 20A* | Rear power point |
| 38 | 25A* | Subwoofer power |
| 39 | 20A* | Instrument panel powerpoint |
| 40 | 20A* | Low beam headlamps, DRL |
| 41 | 20A* | Cigar lighter, Diagnostic connector power |
| 42 | 10A* | Trailer tow left turn/stop lamps |
| 101 | 30A** | Starter solenoid |
| 102 | 20A** | Ignition switch feed |
| 103 | 20A** | ABS valves |
| 104 | — | Not used |
| 105 | 30A** | Electric trailer brakes |
| 106 | 30A** | Trailer tow battery charge |
| 107 | 30A** | Power door locks (BSM) |
| 108 | 30A** | Passenger power seat |
| 109 | 30A** | Driver power seat, Adjustable pedals |
| 110 | — | Not used |
| 111 | 30A** | 4×4 relays |
| 112 | 40A** | ABS pump power |
| 113 | 30A** | Wipers and washer pump |
| 114 | 40A** | Heated backlite, Heated mirror power |
| 115 | — | Not used |
| 116 | 30A** | Blower motor |
| 117 | — | Not used |
| 118 | 30A** | Heated seats |
| 401 | 30A Circuit breaker | Power windows, Moonroof, Power-sliding backlite |
| R01 | Full ISO relay | Starter solenoid |
| R02 | Full ISO relay | Accessory delay |
| R03 | Full ISO relay | Hi-beam headlamps |
| R04 | Full ISO relay | Heated backlite |
| R05 | Full ISO relay | Trailer tow battery charge |
| R06 | Full ISO relay | Blower motor |
| R201 | Half ISO relay | Trailer tow park lamps |
| R202 | Half ISO relay | Fog lamps |
| R203 | Half ISO relay | PCM |
2004 Ford F150 Auxiliary relay box
The relay box, which serves as a haven for electrical relays, is located within the vast engine compartment and is tucked away against the left fender. It is strategically positioned to act as the main control point for the complex network of electrical operations in your car. The relays each one has a special code that helps to explain how it works, and is coded as follows:
| Fuse/Relay location | Fuse amp rating | Description |
| F01 | 5A | Clockspring illumination |
| R01 | — | 4×4 CCW |
| R02 | — | 4×4 CW |
| R03 | — | Daytime Running Lamps (DRL) (if equipped, otherwise not used) |
| R201 | — | DRL |
| R202 | — | A/C clutch |
| D01 | — | A/C clutch diode |
2004 Ford F150 Standard fuse amperage rating and color
| Fuse rating | Mini fuses | Standard fuses | Maxi fuses | Cartridge maxi fuses | Fuse link cartridge |
| 2A | Grey | Grey | — | — | — |
| 3A | Violet | Violet | — | — | — |
| 4A | Pink | Pink | — | — | — |
| 5A | Tan | Tan | — | — | — |
| 7.5A | Brown | Brown | — | — | — |
| 10A | Red | Red | — | — | — |
| 15A | Blue | Blue | — | — | — |
| 20A | Yellow | Yellow | Yellow | Blue | Blue |
| 25A | Natural | Natural | — | — | — |
| 30A | Green | Green | Green | Pink | Pink |
| 40A | — | — | Orange | Green | Green |
| 50A | — | — | Red | Red | Red |
| 60A | — | — | Blue | — | Yellow |
| 70A | — | — | Tan | — | Brown |
| 80A | — | — | Natural | — | Black |
Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.