Wiring Diagram Cluster
1991 Buick Regal Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Regal V6-191 3.1L
Total Vehicle Diagrams
759
From Diagram To Fix
Use this wiring page as the jump point, not the dead end
Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.
Keep context
Vehicle Repair Hub
Step out of raw diagrams and into the full 1991 Buick Regal hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →OEM source
Factory Manual Evidence
When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.
1991 Buick Regal A L L Diagnostic Trouble Codes ( DTC ) →Diagnostic signal
Codes Often Seen With This System
Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.
B1318: Battery Voltage Low →Top Body Electrical Diagram Paths
1.Horn — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen2.Horn — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen3.Horn — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen4.Horn — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen5.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen6.Horn — Electrical Diagrams > Four-DoorLighting and HornsOpen7.Horn — Electrical Diagrams > Two-DoorLighting and HornsOpen8.Locks > Keyless Entry — Diagnostic Aids > Pull-to-Seat ConnectorsBody and FrameOpen9.Locks > Keyless Entry — Diagnostic Aids > Push-to-Seat ConnectorsBody and FrameOpen10.Locks > Keyless Entry — Diagram Information and Instructions > Cell ReferencesBody and FrameOpen11.Locks > Keyless Entry — Diagram Information and Instructions > Schematic SymbolsBody and FrameOpen12.Locks > Keyless Entry — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen13.Locks > Keyless Entry — Electrical Diagrams > Four DoorBody and FrameOpen14.Locks > Keyless Entry — Electrical Diagrams > Two DoorBody and FrameOpen15.Antitheft and Alarm Systems > Keyless Entry — Diagnostic Aids > Pull-to-Seat ConnectorsAccessories and Optional EquipmentOpen16.Antitheft and Alarm Systems > Keyless Entry — Diagnostic Aids > Push-to-Seat ConnectorsAccessories and Optional EquipmentOpen17.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Cell ReferencesAccessories and Optional EquipmentOpen18.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Schematic SymbolsAccessories and Optional EquipmentOpen19.Antitheft and Alarm Systems > Keyless Entry — Diagram Information and Instructions > Wire Color Code IdentificationAccessories and Optional EquipmentOpen20.Antitheft and Alarm Systems > Keyless Entry — Electrical Diagrams > Four DoorAccessories and Optional EquipmentOpen21.Antitheft and Alarm Systems > Keyless Entry — Electrical Diagrams > Two DoorAccessories and Optional EquipmentOpen22.Components > Miscellaneous Components > HornGeneralOpen23.Components > Miscellaneous Components > Trunk LightGeneralOpen24.Components > Modules > Keyless Entry ModuleGeneralOpen25.Components > Motors > Door Lock MotorGeneralOpen26.Components > Relays > Horn RelayGeneralOpen27.Components > Switches > Door Lock Switch, FrontGeneralOpen28.Electrical Diagrams > Keyless Entry > Four DoorGeneralOpen29.Electrical Diagrams > Keyless Entry > Two DoorGeneralOpen30.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen31.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen32.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Cigar Lighter/I/P Compartment/Luggage Compartment/CargoGeneralOpen33.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Console Courtesy, I/P Courtesy, Front & Rear Courtesy > Part 1 of 2GeneralOpen34.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Console Courtesy, I/P Courtesy, Front & Rear Courtesy > Part 2 of 2GeneralOpen35.Electrical Diagrams > Lighting and Horns > Dimmer Switch > Early ProductionGeneralOpen36.Electrical Diagrams > Lighting and Horns > Dimmer Switch > Regular ProductionGeneralOpen37.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Four-DoorGeneralOpen38.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Two-DoorGeneralOpen39.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 1 of 6GeneralOpen40.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 2 of 6GeneralOpen41.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 3 of 6GeneralOpen42.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 4 of 6GeneralOpen43.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 5 of 6GeneralOpen44.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 6 of 6GeneralOpen45.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 1 of 6GeneralOpen46.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 2 of 6GeneralOpen47.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 3 of 6GeneralOpen48.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 4 of 6GeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1991 Buick Regal A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Riviera V6-231 3.8L VIN L SFI Service Manual | Operation CHARM Operation CHARM : Car re...
1991 Buick Regal A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Reatta V6-231 3.8L VIN L SFI Service Manual | Operation CHARM Operation CHARM : Car rep...
1991 Buick Regal A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Roadmaster V8-305 5.0L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1991 Buick Regal A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Roadmaster Estate Wagon V8-305 5.0L Service Manual | Operation CHARM Operation CHARM :...
Likely Trouble Codes for This System
Browse →More Regal Wiring Pages
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Same System, Other Vehicles
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