Buick Regal (1994) fuse box and relay Diagrams
The Buick Regal 1994 represented a pinnacle of luxury and innovation in the Buick lineup during that era. This model integrated a variety of sophisticated electrical components, including the fuse box and relays, which were essential for managing and controlling the vehicle’s electrical systems.
The fuse box in the Buick Regal 1994 housed multiple fuses designed to protect electrical circuits from overloads and short circuits. These fuses were critical in safeguarding components such as headlights, taillights, power windows, and the stereo system. Understanding the location and function of each fuse was crucial for diagnosing and resolving electrical issues effectively.
Relays in the Buick Regal 1994 served as electrically operated switches that controlled the flow of electricity to specific components. These relays were integral to systems such as the starter motor, fuel pump, cooling fans, and other vital components, ensuring reliable operation and optimal performance. Proper functioning of relays was essential for maintaining the vehicle’s overall functionality and reliability.
In addition to these components, the Buick Regal 1994 boasted advanced electrical technologies for its time, including electronic climate control, power-adjustable seats, and a premium audio system. These features relied on a robust electrical infrastructure to deliver comfort and convenience to both driver and passengers.
(1994) Buick Regal 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 Regal 1994 fuse assignment
Year of production: 1994
Fuse block
This fuse panel is inside the glove box. Pull the cover down to access the fuses. Some spare fuses and a fuse puller are included.
| Fuses | Amp | Usage |
| 1 | 10A | Radio & Clock, Steering Wheel Radio Switches |
| 2 | 10A | Headlight Switch, Air Bag Diagnostic Module, ABS Lamp Driver Module, Daytime Running Lamps Module (w/DRL), TCC/Brake Switch, Cruise Control Cut-Out Switch, Instrument Cluster, Chime Module, Rear Defogger Timer Relay |
| 3 | 20A | A/C HI Blower Relay |
| 4 | 25A | Wipermasher Switch |
| 5 | 10A | Turn Signal Flasher |
| 6 | 15A | TCC/Brake Switch, Hazard Flasher |
| 7 | 15A | Vanity Mirror, Lights, I/P Compartment Light, Courtesy Lights, Trunk Courtesy Light, Dome/Reading Lights, Cigar Lighter |
| 8 | 15A | Air Bag Diagnostic Module |
| 9 | 20A | Power Door Locks, Remote Keyless Entry System |
| 10 | 15A | Cigar Lighter |
| 11 | 5A | Theft Deterrent Decoder Module |
| 12 | 15A | Heater, Vent A/C Solenoid Box, A/C LO Blower Relay |
| 13 | 15A | Chime Module, Electronic Brake Control Module. Theft Deterrent Decoder Module, Radio, Passive Restraint Timer Relay, Low Oil Level Module |
| 14 | 15A | Air Temperature Valve Motors, Instrument Cluster, Daytime Running Lights Module (w/DRL), HVAC Control Assembly, Multi-Function Lever, Heated Oxygen Sensor #2, Passenger Temperature Control |
| 15 | 5A | Electronic Brake Control Module, Underhood, Electrical Center #2, ABS Relay |
| 16 | 10A | Antenna Relay, Outside Mirror Control, Front Window/Door Lock Switches, Front Door Handle Switches |
| 17 | — | Not Used |
| 18 | 5A | Air Bag Diagnostic Module |
Component Center Under Instrument Panel
| Item | Amp | Usage |
| 1 | Defogger Timer Relay | |
| 2 | Air Conditioner Blower Relay(HI) | |
| 3 | Air Conditioner Blower Relay (LO) | |
| 4 | 30A | Defogger Circuit Breaker |
| 5 | 30A | Power Accessories Circuit Breaker |
| 6 | 30A | Power Windows and Sunroof Circuit Braker |
| 7 | Not Used | |
| 8 | 20A | Lock Control Fuse |
| 9 | Chime Module | |
| 10 | Hazard Flashe |
Electrical Center Passenger Side – Underhood
| Mini fuse | Amp | Usage |
| 1 | Not | |
| 2 | 15A | Remote Trunk Release |
| 3 | 20A | Powertrain Control Module (PCM), Fuel Pump/Oil Pressure Switch, Fuel Pump Relay. Fan Control #I Relay |
| 4 | 15A | Automatic Transaxle, Transaxle Range Switch (w/VIN M only) |
| 5 | 15A | Generator. Digital Exhaust Recirculation (DEGR), Heated Oxygen Sensor, Fan Control #2 Relay, A/C Compressor Relay (VIN M only) |
| 6 | 15A | Cruise Control Module. A/C Compressor Relay (VIN L only) |
| 7 | 15A | Fuel Injectors, High Resolution 24X Crankshaft Position Sensor, Camshaft Position Sensor |
| 8 | 15A | Powertrain Control Module (PCM), Mass Air Flow (MAF) Sensor (VIN L only) |
| 9 | 15A | Electronic Ignition (E1)-Control Module |
| Maxi fuse | Amp | Usage |
| 10 | 60A | I/P Fuse Block, Courtesy Fuse. C/Ltr Fuse, Elec. Fuse, ACC Fuse |
| 11 | 60A | Fdn Control #I Relay |
| 12 | 60A | Passenger Side Underhood Electrical Center and I/P Fuse Block: Blower Fuse. Stop Fuse. Door Locks Fuse |
| 13 | 60A | Fan Control #2 Relay and Component Center: Rear Defog Circuit Breaker, Power ACC Circuit Breaker |
| Relay | Amp | Usage |
| 14 | Fuel Pump | |
| 15 | A/C Compressor | |
| 16 | Fan Control #2 – Secondary Cooling Fan (Passenger Side) | |
| 17 | Fan Control #I – Primary Cooling Fan (Driver Side) | |
| 18 | Not Used |
Electrical Center Driver Side – Underhood
| Mini Fuse | Amp | Usage |
| 1 | Not Used | |
| 2 | Not Used | |
| 3 | Not Used | |
| 4 | 10A | Fog Lamps |
| 5 | 25A | Parking Lamps, Headlight Switch |
| 6 | 15A | Horn Relay, Underhood Light |
| 7 | Not Used | |
| 8 | Not Used | |
| 9 | Not Used |
| Maxi Fuse | Amp | Usage |
| 10 | 40A | Component Center: Power Windows Circuit Breaker, Passenger Side Underhood Electrical Center, TCC and Engine Emissions Fuse |
| 11 | 40A | I/P Fuse Block: Radio, Wiper, HVAC, ABS and Turn Signal Fuses; Passenger Side Underhood Electrical Center: Fuel Injections, ECM IGN and ELEK IGN Fuses |
| 12 | 30A | Headlight Switch Circuit Breaker |
| 13 | 60A | ABS Relay |
| Relay | Amp | Usage |
| 14 | Anti-lock Brake System | |
| 15 | Fog Lamps | |
| 16 | Horn |
Conclusion
For owners and enthusiasts of the Buick Regal 1994, understanding the fuse box and relay systems was crucial 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 luxury and innovation in the automotive industry during that period.