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.
1990 BMW 735iLFACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location |
|---|---|
| Auxiliary Fuse/Relay Box | On left side of engine compartment, ahead of shock tower. See Figure . |
| Electrical E-Box | On right side of engine compartment, behind shock tower. |
| Front Power Distribution Box | At left rear engine compartment. |
| Fusible Link "A" | Below right side of rear seat, next to battery. |
| Fusible Link "B" | Below right side of rear seat, next to battery. |
| Fusible Link (10 Amp) | At right corner of luggage compartment. |
| Fusible Link (50 Amp) | Near positive terminal on battery. |
| Fusible Link (80 Amp) | Near positive terminal on battery. |
| Park Heating Relay Box | Behind right side of dash, above glove box. |
| Rear Power Distribution Box | Under left side of rear seat. |
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.