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 Oldsmobile Custom CruiserFACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location | |
|---|---|---|
| Convenience Center | On bracket, to left of fuse block. | |
| Fuse Block | ||
| 5.0L (VIN Y) | Under left side of dash. See Figure . | |
| 5.0L (VIN E) | Under left side of dash. See Figure . | |
| Fuel Pump Relay In-Line Fuse | In harness, to left of fuel pump relay. See Figure . | |
| Fusible Links | ||
| A/C Blower Relay (Black) | At starter solenoid. | |
| Alternator (Black & Rust) | At starter solenoid. | |
| Fuse Block & Headlight Switch (Black or Rust) | At starter solenoid. | |
| Ignition (Black or Rust) | At starter solenoid. | |
| Power Accessory Circuit Breaker (Defogger, Door Locks, Seats) | In fuse block. | |
| Power Window Circuit Breaker | In fuse block. | |
Factory Service Tools
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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.