Ford Mustang (2003 – 2012) – fuse box diagram
Year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Passenger junction box
| Fuse | Ampere rating [A] | Description |
| 1 | 20 | Cigar lighter |
| 2 | 20 | Engine controls |
| 3 | — | Not used |
| 4 | 10 | Right-hand low beam headlamp |
| 5 | 15 | Instrument cluster, Traction control switch |
| 6 | 20 | Starter motor relay |
| 7 | 15 | GEM, Interior lamps |
| 8 | 20 | Engine controls |
| 9 | 30 | Mach 460 subwoofers |
| 10 | 10 | Left-hand low beam headlamp |
| 11 | 15 | Back-up lamps |
| 12 | 2 | Heated PCV |
| 13 | 15 | Electronic flasher |
| 14 | — | Not used |
| 15 | 15 | Power lumbar |
| 16 | — | Not used |
| 17 | 15 | Speed control servo, Shift lock actuator |
| 18 | 15 | Electronic flasher |
| 19 | 15 | Power mirror switch, GEM, Anti-theft relay, Power door locks, Door ajar switches |
| 20 | 15 | Convertible top switch |
| 21 | 5 | Instrument cluster and engine control memory |
| 22 | — | Not used |
| 23 | 15 | A/C clutch, Defogger switch |
| 24 | 30 | Climate control blower motor |
| 25 | 25 | Luggage compartment lid release |
| 26 | 30 | Wiper/Washer motor, Wiper relays |
| 27 | 20 | Radio |
| 28 | 15 | GEM, Overdrive cancel switch |
| 29 | 15 | Anti-lock Brake System (ABS) module |
| 30 | 15 | Daytime Running Lamps (DRL) module |
| 31 | 10 | Data link connector |
| 32 | 15 | Radio, GEM |
| 33 | 15 | Stop lamp switch, Speed control deactivation switch |
| 34 | 20 | Instrument Cluster, CCRM, Data link connector, Securilock transceiver module |
| 35 | 15 | Shift lock actuator, Powertrain Control Module (PCM), Speed control servo, ABS module |
| 36 | 15 | Air bag control module |
| 37 | 5 | Adjustable illumination |
| 38 | 20 | High beams |
| 39 | 5 | GEM |
| 40 | — | Not used |
| 41 | 15 | Brake lamp |
| 42 | — | Not used |
| 43 | 20 CB | Power windows |
| 44 | — | Not used |
Engine junction box
| Fuse/Relay Location | Ampere rating [A] | Description |
| Relay 1 | — | Fog lamp interrupt |
| Relay 2 | — | Interval wiper |
| Relay 3 | — | Wiper HI/LO |
| Relay 4 | — | Starter |
| Relay 5 | — | Fog lamps |
| 1 |
50** (4.6l)
30 CB (3.8l)
|
Electric cooling fan motor |
| 2 | 30** | Headlamps |
| 3 | 40** | Starter motor relay, Ignition switch |
| 4 | 40** | Ignition switch |
| 5 | 40** | Ignition switch |
| 6 | 40** | Instrument cluster, Powertrain Control Module (PCM) |
| 7 | — | Not used |
| 8 | 50** | Anti-lock Brake System (ABS) module |
| 9 | 20** | Auxiliary power point |
| 10 | 30** | Parklamps |
| 11 | 30** | Rear window defrost control |
| 12 | 40** | Power locks |
| 13 | 30* | MACH 1000 left amplifiers |
| 14 | 20* | Fuel pump |
| 15 | 30* | MACH 1000 right amplifiers |
| 16 | 20* | Horn |
| 17 | 20* | ABS |
| 18 | 30* | Power seat |
| 19 | 10* | Intercooler pump (Cobra only) |
| 20 | 20* | Alternator |
| 21 | — | Not used |
| 22 | — | Not used |
| 23 | — | Not used |
| 24 | 20* | A/C pressure |
| 25 | — | Not used |
| 26 | 30** | PCM |
| 27 | 20** | Daytime Running Lamps (DRL) module, Foglamp relay |
| 28 | 25 CB | Convertible top circuit breaker |
| 29 | — | Not used |
| * Mini Fuses** Maxi Fuses | ||
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.