The Buick Century, manufactured in 1993, exemplifies Buick’s commitment to luxury and performance in the mid-size sedan segment. Its advanced electrical system includes essential components such as the fuse box and relays.
The fuse box in the Buick Century 1993 houses fuses designed to protect electrical circuits from overloads and short circuits, ensuring the safety of critical components like headlights, taillights, and power windows. Relays, serving as electrically controlled switches, manage the flow of electricity to systems such as the starter motor, fuel pump, and cooling fans, ensuring efficient and reliable operation.
Additional sophisticated electrical components in the Buick Century of this era include climate control systems, power-adjustable seats, and premium audio systems. These features rely on a robust electrical infrastructure to enhance comfort, convenience, and entertainment for occupants.
Understanding the layout and function of the fuse box and relays is crucial for maintaining and troubleshooting the Buick Century 1993’s electrical systems. Regular inspection and maintenance of these components help ensure the vehicle’s reliability and performance, maintaining its reputation as a luxurious and dependable sedan in Buick’s lineup.
(1993) Buick Century fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Buick Century 1993 fuse assignment
- Circuit Breaker: Headlight Circuit — A thermo circuit breaker is incorporated in the headlight switch assembly to protect headlight circuits. Windshield Wiper — Integral with windshield wiper motor.
Year of production: 1993
Instrument Panel Fuse Block
The fuse panel is located inside the glove box, on the left side.
| Fuse | Ampere rating [A] | Usage |
| A | 15A | ECM; MAF Sensor (3300 Engine only) |
| B | 20A | ECM Injectors/Coil |
| C | 10A | Eng. A/C Relay; EGR Solenoid; Canister Purge Solenoid |
| D | 10A | Fan/Elect; Generator; DRL Module |
| E | 15A | Turn Signal Flasher; Back-up Lights; Trunk/Liftgate Release |
| F | 10A | Supplemental Inflatable Restraint (Air Bagj |
| G | 20A | Tail; Park; Side Marker; License Plate; Stop/Turn Signa |
| H | 20A | Heater/Air Conditioner |
| I | 10A | Gages; Warning Indicators; Torque Convert Clutch; Audible Warning System; Computer Command Control; Trunk Release; Brake Warning Indicator; Rear Defog Switch; Speedometer |
| J | 20A | Stop Lights; Hazard Flashers |
| K | 20A | Interior, Underhood, Courtesy, I/P, Trunk Lights; Door Locks; Horn Relay, Passive Restraint System, Deck Lid Release, Power Antenna |
| L | 30* | Liftgate Release; Power Windows |
| M | 5A | Illumination for: I/P, Radio, Pod Lights, Ashtray, Console Light, Heater-A/C Control, Defog Switch, Headlight Switch |
| N | 10A | Radio, Cruise Control |
| O | 30* | Seats, Door Locks, Rear Defog |
| P | 25A | Windshield Wipe/Was |
| Q | 20A | Cigarette Lighter |
| 15A | Safety Belt/Chirne (ICAM) Module (Located behind the fuse block, above the hush panel. | |
| 15A | Remote Lock Control (Located behind the fuse block, above the hush panel. | |
| 15A | Fuel Pump, ECM (Located under the hood.) | |
| *Circuit Breaker | ||
Conclusion
For owners and enthusiasts of classic Buick Century 1993, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Buick’s craftsmanship and innovation in the automotive industry during that era.
