2004 Ford Ranger Fuse Box Diagram: Cabin and Engine Bay Charts
Your 2004 Ford Ranger has two fuse boxes. The Smart Junction Box is at the left end of the instrument panel. The power distribution box is in the engine bay, driver’s side, near the fender and firewall. The cigar lighter is fuse 29, rated 20A, in the interior panel, not the engine bay box.
Where are the fuse boxes on a 2004 Ford Ranger?
Passenger compartment fuse panel. Left end of the instrument panel, driver’s side, behind a removable access door. Ford calls this panel the Smart Junction Box (SJB) starting this model year. It replaces the passive fuse panel used through 2003.
Power distribution box. Engine compartment, driver’s side, near the front fender and firewall, close to the brake master cylinder. Its layout depends on which engine your truck carries, the 2.3L four-cylinder or the 3.0L/4.0L V6.
Most sites get this wrong: your 2004 Ranger shares nothing with the 2001-2003 chart
The roadmap for this site originally grouped 2001 through 2005 Rangers as one generation. That was wrong, and the mistake is instructive. Ford fully redesigned this fuse panel for 2004. Reusing a 2001-2003 table here would hand you a wrong amperage with real confidence.
The Ranger Station itself confirms this split. It publishes a separate 2001-2003 reference page and a different 2004-2011 page, rather than one combined chart. That is independent proof this is a real design change, not a copy-paste shortcut.
Three checkable examples, cross-referenced against StartMyCar’s 2004 pages and Auto Genius’s 2004 chart:
| Position | 2001-2003 | 2004 |
|---|---|---|
| Fuse 17 | Cigar lighter, data link connector, 20A | Turn signals/hazards, 15A |
| Fuse 19 | PCM power diode, ignition, PATS, 25A | CHMSL/stop lamps, 20A |
| Fuse 29 | Radio, 20A | Cigar lighter, power point, diagnostic connector, 20A |
The engine bay box changed architecture too, not just numbers. The 2001-2003 power distribution box protects the ABS pump motor with one 50A fuse at position 6.
The 2004 box splits that into two circuits instead. A 30A fuse covers the ABS solenoids, and a separate 40A fuse covers the ABS motor. Ford re-engineered the circuit, it did not just renumber it.
Our 2001 Ford Ranger fuse box diagram covers that earlier chart, for a 2001-2003 truck. Do not mix the two.
2004 Ford Ranger passenger compartment fuse chart
Left end of the instrument panel, driver’s side. 35 positions, all mini (ATO/ATC) fuses except position 16, a larger FMX/JCase fuse. Four positions carry a relay instead of a fuse, and two are spare or not used.
| Fuse | Amps | Circuit protected |
|---|---|---|
| 1 | 5A | Instrument panel dimmer switch |
| 2 | 10A | Trailer tow park lamps |
| 3 | 10A | Right low beam headlamp |
| 4 | 10A | Left low beam headlamp |
| 5 | 30A | Windshield wipers/washer |
| 6 | 10A | Radio (RUN/ACCY) |
| 7 | 5A | Headlamp illumination indicator |
| 8 | 10A | Restraints Control Module (RCM), Passenger Airbag Deactivation Indicator (PADI) |
| 9 | 5A | Cluster air bag indicator |
| 10 | 10A | Instrument cluster (RUN/START), 4×4 module |
| 11 | 10A | Smart Junction Box (SJB) logic power |
| 12 | 15A | Center console subwoofer amplifier |
| 13 | 15A | Horn, interior lamps |
| 14 | 15A | High beam headlamp, indicator |
| 15 | – | One-touch-down relay |
| 16 | 30A | Power windows |
| 17 | 15A | Turn signals/hazards |
| 18 | – | Not used |
| 19 | 20A | Center High-Mounted Stop Lamp (CHMSL)/stop lamps |
| 20 | 10A | ABS module, brake-shift interlock, speed control |
| 21 | 5A | Starter relay |
| 22 | 5A | Spare |
| 23 | 30A | Headlamps (low and high beam) |
| 24 | 20A | Radio |
| 25 | – | Accessory relay |
| 26 | 2A | Brake pressure switch |
| 27 | 10A | Climate control blower relay/blend doors, 4×4 module |
| 28 | 15A | 4×4 module B+ |
| 29 | 20A | Cigar lighter/power point, diagnostic connector (OBD II). One source reads 15A, see the note below. |
| 30 | 5A | Power mirrors |
| 31 | 20A | Front/rear park lamps, license plate lamps |
| 32 | 5A | Brake switch (logic) |
| 33 | 5A | Instrument cluster |
| 34 | 20A | Power point |
| 35 | 15A | Power locks |
2004 Ford Ranger power distribution box fuse chart
Engine bay, driver’s side, near the fender and firewall. The layout splits by engine. The 3.0L and 4.0L V6 box is shown in full below, since it covers most 2004 Rangers on the road.
| Fuse | Amps | Circuit protected |
|---|---|---|
| 1 | 50A | Interior fuse panel (SJB) |
| 2 | 40A | Amplifier, Tremor audio package only. See the note below, one source reads 50A. |
| 3 | 50A | Interior fuse panel (SJB) |
| 5 | 50A | Interior fuse panel (SJB) |
| 7 | 40A | Starter relay |
| 9 | 40A | Ignition switch |
| 11 | 30A | Powertrain Control Module (PCM), engine sensors |
| 13 | 30A | Blower motor (climate control) |
| 15 | 30A | ABS solenoids |
| 17 | 40A | ABS motor |
| 21 | 10A | PCM memory (keep-alive power) |
| 23 | 20A | Fuel pump relay |
| 25 | 10A | A/C clutch solenoid |
| 27 | 20A | 4×4 module |
| 31 | 15A | Foglamps |
| 38 | 7.5A | Trailer tow, right turn |
| 41 | 15A | HEGO sensors, EVAP canister vent valve, EGR stepper motor, transmission |
| 42 | 7.5A | Trailer tow, left turn |
Relays in this box: wiper hi/lo, wiper park/run, A/C clutch, washer pump, PCM, fuel pump, fog lamp, blower and starter.
2.3L four-cylinder power distribution box. Positions 1, 3, 5, 7, 9, 11, 13, 15, 17, 21, 23, 25, 38, 41, 42 match the V6 box. Position 19 is live at 20A for the engine cooling fan.
The V6 box leaves that position unused, since the V6 uses a clutch-driven fan instead. Positions 2, 27 and 31 do not appear on the 2.3L box at all. The Tremor amplifier fuse and the 4×4 module fuse are V6-specific line items in the sources checked here.
What if a fuse keeps blowing on your 2004 Ranger?
A fuse that blows once is usually a fluke. A fuse that blows again within a week means the fault is upstream, not in the fuse itself.
| Symptom | Check this fuse |
|---|---|
| Cigar lighter or power point dead | Fuse 29, passenger panel, 20A |
| OBD II scan tool will not power up | Fuse 29, passenger panel, 20A. Shares the position with the cigar lighter. |
| Radio or display dead | Fuse 6 (10A) or fuse 24 (20A), passenger panel |
| Wipers do not run on any speed | Fuse 5, passenger panel, 30A |
| Power windows dead | Fuse 16, passenger panel, 30A |
| Both headlamps out | Fuse 23, passenger panel, 30A |
| One low beam out, bulb tests good | Fuse 3 (right) or 4 (left), passenger panel, 10A each |
| Brake, third stop lamp, or turn signal issue | Fuse 19 (CHMSL/stop lamps, 20A) or fuse 17 (turn signals/hazards, 15A), passenger panel |
| 4×4 will not engage electronically | Fuse 10 or 28, passenger panel, and fuse 27, engine bay (V6 only), 20A |
| Blower motor or heater fan dead | Fuse 13, engine bay, 30A |
| No fuel pump prime, engine cranks but will not start | Fuse 23, engine bay, 20A |
| No crank, no start | Fuse 7 (starter relay, 40A) or fuse 9 (ignition switch, 40A), engine bay |
| ABS light on, pump solenoids do not cycle | Fuse 15, engine bay, 30A |
| ABS light on, pump motor does not run | Fuse 17, engine bay, 40A. A different circuit from the solenoid fuse above. |
| A/C compressor clutch will not engage | Fuse 25, engine bay, 10A |
| Power locks dead | Fuse 35, passenger panel, 15A |
| Subwoofer amplifier (factory audio) dead | Fuse 12, passenger panel, 15A, or fuse 2, engine bay, on Tremor-package trucks |
If the replacement fuse blows again immediately, stop replacing fuses. Check for a short or a chafed harness instead.
A cheap fuse assortment kit covers every rating on this truck and costs less than a single dealer visit. Any brand meeting the ATO/ATC mini fuse standard fits. Fuse assortment kits on Amazon.
Where is the cigar lighter fuse on a 2004 Ford Ranger, and why do some charts disagree?
Fuse 29 in the passenger compartment panel. Three of the four 2004-specific sources checked here, The Ranger Station, StartMyCar and Auto Genius, put it at 20A. It also protects the OBD II diagnostic connector on the same circuit. A scan tool that will not power up points at the same fuse.
One source, Ricks Free Auto Repair Advice, lists fuse 29 at 15A instead, with no year caveat explaining the gap. That is three sources against one, all claiming to cover the 2004 model specifically. Your box cover legend, printed inside the access door, is the final word for your truck.
A second small disagreement is worth noting too. The Tremor package amplifier fuse in the engine bay, position 2, reads 40A on StartMyCar and 50A on Ricks. Only these two sources cover that rare, factory-audio-only fuse.
This one stays an open item rather than a pick. It only matters if your Ranger carries the Tremor audio package.
Is the 2004 Ranger fuse box the same as 2005 through 2011?
The Ranger Station groups 2004 through 2011 as one reference page. That is the strongest evidence available that Ford held this SJB layout steady across those years. It is a much longer run than the three-year 2001-2003 chart it replaced.
Treat this chart as your starting point for a 2005 through 2011 Ranger too. The same caveat applies to every year on this site. Your box cover legend is the specific authority for your truck. A mid-generation production change is always possible.
If the fuse keeps blowing after a fresh fuse, what next?
A fuse protects the wire, not the part. A short to ground or a chafed harness blows a fresh fuse in seconds. No amount of fuse-swapping fixes that.
At that point you need to read live data rather than keep guessing, which means a scan tool. Our Ford diagnostic tool comparison covers what actually works across these trucks.
A basic multimeter set to ohms will confirm a short to ground first. Check the ground straps at the engine and frame too. A corroded ground is a common, cheap cause of a circuit that blows fuses only under load.
2004 Ford Ranger fuse box quick reference
| Circuit | Fuse | Box | Amps |
|---|---|---|---|
| Cigar lighter, power point, OBD II | 29 | Passenger panel | 20A (one source: 15A) |
| Wiper motor | 5 | Passenger panel | 30A |
| Power windows | 16 | Passenger panel | 30A |
| Blower motor | 13 | Engine bay | 30A |
| Fuel pump | 23 | Engine bay | 20A |
| ABS solenoids | 15 | Engine bay | 30A |
| ABS motor | 17 | Engine bay | 40A |
| Starter relay | 7 | Engine bay | 40A |
| Ignition switch | 9 | Engine bay | 40A |
| Headlamps | 23 | Passenger panel | 30A |
| Brake pressure switch | 26 | Passenger panel | 2A |
