Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Ford Mustang Mach 1, AutomaticFACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location |
|---|---|
| Auxiliary Fuse Box (Cobra) | On right side of engine compartment, on fender. See Figure. |
| Auxiliary Fuse Box (Mach 1) | On right side of engine compartment, on fender. See Figure. |
| Auxiliary Fuse Box (2.6L 2V) | On right side of engine compartment, on fender. See Figure. |
| Battery Junction Box (BJB) (Cobra) | On left side of engine compartment, forward of strut tower. See Figure. |
| Battery Junction Box (BJB) (Mach 1) | On left side of engine compartment, forward of strut tower. See Figure. |
| Battery Junction Box (BJB) (3.8L) | On left side of engine compartment, forward of strut tower. See Figure. |
| Battery Junction Box (BJB) (4.6L 2V) | On left side of engine compartment, forward of strut tower. See Figure. |
| Central Junction Box (CJB) | Behind dash, left of steering column. See Figure. |
| Fuse Link A/B | On generator rectifier system harness, near battery junction box. |
| Relay Box | Behind left side of dash, near central junction box. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.