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.

buick regal mk3 fuse box 2
FusesAmpUsage
110ARadio & Clock, Steering Wheel Radio Switches
210AHeadlight 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
320AA/C HI Blower Relay
425AWipermasher Switch
510ATurn Signal Flasher
615ATCC/Brake Switch, Hazard Flasher
715AVanity Mirror, Lights, I/P Compartment Light, Courtesy Lights, Trunk Courtesy Light, Dome/Reading Lights, Cigar Lighter
815AAir Bag Diagnostic Module
920APower Door Locks, Remote Keyless Entry System
1015ACigar Lighter
115ATheft Deterrent Decoder Module
1215AHeater, Vent A/C Solenoid Box, A/C LO Blower Relay
1315AChime Module, Electronic Brake Control Module. Theft Deterrent Decoder Module, Radio, Passive Restraint Timer Relay, Low Oil Level Module
1415AAir Temperature Valve Motors, Instrument Cluster, Daytime Running Lights Module (w/DRL), HVAC Control Assembly, Multi-Function Lever, Heated Oxygen Sensor #2, Passenger Temperature Control
155AElectronic Brake Control Module, Underhood, Electrical Center #2, ABS Relay
1610AAntenna Relay, Outside Mirror Control, Front Window/Door Lock Switches, Front Door Handle Switches
17Not Used
185AAir Bag Diagnostic Module

Component Center Under Instrument Panel

buick regal mk3 fuse box component center under instrument panel
ItemAmpUsage
1Defogger Timer Relay
2Air Conditioner Blower Relay(HI)
3Air Conditioner Blower Relay (LO)
430ADefogger Circuit Breaker
530APower Accessories Circuit Breaker
630APower Windows and Sunroof Circuit Braker
7Not Used
820ALock Control Fuse
9Chime Module
10Hazard Flashe

Electrical Center Passenger Side – Underhood

buick regal mk3 fuse box electrical center underhood passenger side 1
Mini fuseAmpUsage
1Not
215ARemote Trunk Release
320APowertrain Control Module (PCM), Fuel Pump/Oil Pressure Switch, Fuel Pump Relay. Fan Control #I Relay
415AAutomatic Transaxle, Transaxle Range Switch (w/VIN M only)
515AGenerator. Digital Exhaust Recirculation (DEGR), Heated Oxygen Sensor, Fan Control #2 Relay, A/C Compressor Relay (VIN M only)
615ACruise Control Module. A/C Compressor Relay (VIN L only)
715AFuel Injectors, High Resolution 24X Crankshaft Position Sensor, Camshaft Position Sensor
815APowertrain Control Module (PCM), Mass Air Flow (MAF) Sensor (VIN L only)
915AElectronic Ignition (E1)-Control Module
Maxi fuseAmpUsage
1060AI/P Fuse Block, Courtesy Fuse. C/Ltr Fuse, Elec. Fuse, ACC Fuse
1160AFdn Control #I Relay
1260APassenger Side Underhood Electrical Center and I/P Fuse Block: Blower Fuse. Stop Fuse. Door Locks Fuse
1360AFan Control #2 Relay and Component Center: Rear Defog Circuit Breaker, Power ACC Circuit Breaker
RelayAmpUsage
14Fuel Pump
15A/C Compressor
16Fan Control #2 – Secondary Cooling Fan (Passenger Side)
17Fan Control #I – Primary Cooling Fan (Driver Side)
18Not Used

Electrical Center Driver Side – Underhood

buick regal mk3 fuse box electrical center underhood driver side 1
Mini FuseAmpUsage
1Not Used
2Not Used
3Not Used
410AFog Lamps
525AParking Lamps, Headlight Switch
615AHorn Relay, Underhood Light
7Not Used
8Not Used
9Not Used
Maxi FuseAmpUsage
1040AComponent Center: Power Windows Circuit Breaker, Passenger Side Underhood Electrical Center, TCC and Engine Emissions Fuse
1140AI/P Fuse Block: Radio, Wiper, HVAC, ABS and Turn Signal Fuses; Passenger Side Underhood Electrical Center: Fuel Injections, ECM IGN and ELEK IGN Fuses
1230AHeadlight Switch Circuit Breaker
1360AABS Relay
RelayAmpUsage
14Anti-lock Brake System
15Fog Lamps
16Horn

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.

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