Ford Mustang (1998 – 2004) Fuse Box Diagrams & Location User Guide
Fuse box diagrams and locations for 1998–2004 Ford Mustangs. This Blog helps you find and access fuses for easy electrical troubleshooting and repair of your classic Mustang’s systems and components.
Fuse Box Locations
Passenger compartment fuse panel
The fuse panel is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.
To remove a fuse use the fuse puller tool provided on the fuse panel cover.
Engine Compartment Fuse Box
The power distribution box is located in the engine compartment. The power distribution box contains high-current fuses that protect your vehicle’s main electrical systems from overloads.
Passenger Compartment Fuse Box Diagram
Ford Mustang (1998 to 2004)
The fuses are coded as follows:
| Fuse/Relay Location | Fuse Amp Rating | Description |
| 1 | 20A | Cigar Lighter |
| 2 | 20A | Engine Controls |
| 3 | — | Not Used |
| 4 | 10A | RH Low Beam Headlamp |
| 5 | 15A | Instrument Cluster, Traction Control Switch |
| 6 | 20A | Starter Motor Relay |
| 7 | 15A | GEM, Interior Lamps |
| 8 | 20A | Engine Controls |
| 9 | —
30A |
Not Used (1998 to 2001)
Mach 460 subwoofers (2002 to 2004 |
| 10 | 10A | LH Low Beam Headlamp |
| 11 | 15A | Back-up Lamps |
| 12 | —
2A |
Not Used (1998 to 2002)
Heated PCV (2003 and 2004) |
| 13 | 15A | Electronic Flasher |
| 14 | — | Not Used |
| Fuse/Relay Location | Fuse Amp Rating | Description |
| 15 | 15A | Power Lumbar |
| 16 | — | Not Used |
| 17 | 15A | Speed Control Servo, Shift Lock Actuator |
| 18 | 15A | Electronic Flasher |
| 19 | 15A | Power Mirror Switch, GEM, Anti-Theft Relay,
Power Door Locks, Door Ajar Switches |
| 20 | 15A | Convertible Top Switch |
| 21 | 5A | Instrument Cluster and
Engine Control Memory |
| 22 | — | Not Used |
| 23 | 15A | A/C Clutch, Defogger Switch |
| 24 | 30A | Climate Control Blower
Motor |
| 25 | 25A | Luggage Compartment
Lid Release |
| 26 | 30A | Wiper/Washer Motor, Wiper Relays |
| 27 | 25A | Radio |
| 28 | 15A | GEM, Overdrive Cancel
Switch |
| 29 | 15A | ABS Module |
| 30 | 15A | DRL Module |
| 31 | 10A | Data Link Connector |
| 32 | 15A | Radio, CD Player, GEM |
| 33 | 15A | Stop Lamp Switch, Speed Control
Deactivation Switch |
| Fuse/Relay Location | Fuse Amp Rating | Description |
| 34 | 20A | Instrument Cluster, CCRM, Data Link Connector, Securilock Transciever Module |
| 35 | 15A | Shift Lock Actuator, PCM, Speed Control
Servo, ABS Module |
| 36 | 15A | Airbag Control Module |
| 37 | 10A | Adjustable Illumination |
| 38 | 20A | Highbeams |
| 39 | 5A | GEM |
| 40 | — | Not Used |
| 41 | 15A | Brake Lamp |
| 42 | — | Not Used |
| 43 | 20A CB | Power Windows |
| 44 | — | Not Used |
Engine Compartment Fuse Box Diagram
Ford Mustang (1998 to 2001)
The high-current fuses are coded as follows.
| Fuse/Relay Location | Fuse Amp Rating | Description |
| Relay 1 | — | Fog Lamp Interrupt |
| Relay 2 | — | Int. Wiper |
| Relay 3 | — | Wiper HI/LO |
| Relay 4 | — | Starter |
| Relay 5 | — | Fog Lamps |
| 1 | 50A** (4.6L), 30A CB (3.8L) |
Electric Cooling Fan Motor |
| 2 | 30A** | Headlamps |
| 3 | 40A** | Starter Motor Relay, Ignition Switch |
| 4 | 40A** | Ignition Switch |
| 5 | 40A** | Ignition Switch |
| 6 | 40A** | Instrument Cluster, PCM |
| Fuse/Relay Location | Fuse Amp Rating | Description |
| 7 | 30A** | Secondary Air Injection (3.8L only) |
| 8 | 50A** | ABS Module |
| 9 | 20A** | Auxiliary Power Point |
| 10 | 30A** | Parklamps |
| 11 | 30A** | Rear Window Defrost Control |
| 12 | 40A** | Power Windows, Power Locks |
| 13 | — | Not Used |
| 14 | 20A* | Fuel Pump |
| 15 | 10A*
— |
Radio (1998 to 2000)
Not Used (2001) |
| 16 | 20A* | Horn |
| 17 | 20A* | Anti-Lock Brake System |
| 18 | 25A* | Power Seats |
| 19 | — | Not Used |
| 20 | 20A* | Generator |
| 21 | — | Not Used |
| 22 | — | Not Used |
| 23 | — | Not Used |
| 24 | 20A* | A/C Pressure (3.8L only) |
| 25 | — | Not Used |
| 26 | 30A** | PCM |
| 27 | 20A** | DRL Module, Foglamp Relay |
| 28 | 25A CB | Convertible Top |
| * Mini Fuses ** Maxi Fuses | ||
Ford Mustang (2002, 2003 and 2004)
The high-current fuses are coded as follows.
| Fuse/Relay Location | Fuse Amp Rating | Power Distribution Box Description |
| Relay 1 | — | Fog lamp interrupt |
| Relay 2 | — | Interval wiper |
| Relay 3 | — | Wiper HI/LO |
| Relay 4 | — | Starter |
| Relay 5 | — | Fog lamps |
| 1 | 50A** (4.6L),
30A CB (3.8L) |
Electric cooling fan motor |
| 2 | 30A** | Headlamps |
| 3 | 40A** | Starter motor relay, Ignition switch |
| 4 | 40A** | Ignition switch |
| 5 | 40A** | Ignition switch |
| 6 | 40A** | Instrument cluster, Powertrain Control Module (PCM) |
| 7 | 30A**
— |
Secondary air injection (3.8L only) (2002) Not Used (2003 and 2004) |
| 8 | 50A** | Anti-lock Brake Sytsem (ABS) module |
| 9 | 20A** | Auxiliary power point |
| 10 | 30A** | Parklamps |
| 11 | 30A** | Rear window defrost control |
| 12 | 40A** | Power windows, Power locks |
| 13 | 30A* | MACH 1000 left amplifiers |
| 14 | 20A* | Fuel pump |
| 15 | 30A* | MACH 1000 right amplifiers |
| 16 | 20A* | Horn |
| 17 | 20A* | ABS |
| 18 | 30A* | Power seats |
| 19 | 10A* | Intercooler pump (Cobra only) |
| 20 | 20A* | Alternator |
| 21 | — | Not used |
| Fuse/Relay Location | Fuse Amp Rating | Power Distribution Box Description |
| 22 | — | Not used |
| 23 | — | Not used |
| 24 | 20A* | A/C pressure |
| 25 | — | Not used |
| 26 | 30A** | PCM |
| 27 | 20A** | Daytime Running Lamps (DRL) module, Foglamp relay |
| 28 | 25A CB | Convertible top |
| 29 | Diode
— |
Convertible top circuit breaker (2002)
Not used (2003 and 2004) |
| * Mini Fuses ** Maxi Fuses | ||