Wiring Diagram Cluster

1991 Buick Regal Headlight Wiring Diagram

Find headlight circuit schematics, high/low beam relay paths, DRL wiring, and ground points for lighting diagnosis.

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 β†’

Likely fix path

Exact Repair Guides

These repair flows most often intersect with headlight diagnosis on this exact vehicle.

Headlight Bulb Replacement β†’

Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

P0563: System Voltage High β†’

Top Headlight Diagram Paths

1.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Less Daytime Running LampsGeneralOpen2.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > With Daytime Running Lamps > Early ProductionGeneralOpen3.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > With Daytime Running Lamps > Regular ProductionGeneralOpen4.Headlamp β€” Electrical Diagrams > Less Daytime Running LampsLighting and HornsOpen5.Headlamp β€” Electrical Diagrams > With Daytime Running Lamps > Early ProductionLighting and HornsOpen6.Headlamp β€” Electrical Diagrams > With Daytime Running Lamps > Regular ProductionLighting and HornsOpen7.Components > Modules > Daytime Running Lamps (DRL) ModuleGeneralOpen8.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 1 of 6GeneralOpen9.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 2 of 6GeneralOpen10.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 3 of 6GeneralOpen11.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 4 of 6GeneralOpen12.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 5 of 6GeneralOpen13.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Early Production > Part 6 of 6GeneralOpen14.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 1 of 6GeneralOpen15.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 2 of 6GeneralOpen16.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 3 of 6GeneralOpen17.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 4 of 6GeneralOpen18.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 5 of 6GeneralOpen19.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Regular Production > Part 6 of 6GeneralOpen20.Headlamp β€” Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen21.Headlamp β€” Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen22.Headlamp β€” Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen23.Headlamp β€” Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen24.Headlamp β€” Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen25.Components > Miscellaneous Components > Daytime Running Light DiodeGeneralOpen26.Components > Switches > Headlamp Dimmer & Flash to Pass SwitchGeneralOpen27.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen28.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen29.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Cigar Lighter/I/P Compartment/Luggage Compartment/CargoGeneralOpen30.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Console Courtesy, I/P Courtesy, Front & Rear Courtesy > Part 1 of 2GeneralOpen31.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Console Courtesy, I/P Courtesy, Front & Rear Courtesy > Part 2 of 2GeneralOpen32.Electrical Diagrams > Lighting and Horns > Dimmer Switch > Early ProductionGeneralOpen33.Electrical Diagrams > Lighting and Horns > Dimmer Switch > Regular ProductionGeneralOpen34.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Four-DoorGeneralOpen35.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Two-DoorGeneralOpen36.Electrical Diagrams > Lighting and Horns > Horn > Four-DoorGeneralOpen37.Electrical Diagrams > Lighting and Horns > Horn > Two-DoorGeneralOpen38.Electrical Diagrams > Lighting and Horns > Key Cylinder LampGeneralOpen39.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Early Production > Four-DoorGeneralOpen40.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Early Production > Two-DoorGeneralOpen41.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Regular Production > Four-DoorGeneralOpen42.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Regular Production > Two-DoorGeneralOpen43.Electrical Diagrams > Lighting and Horns > Marker Lamp > Early Production > Four-Door > Part 1 of 2GeneralOpen44.Electrical Diagrams > Lighting and Horns > Marker Lamp > Early Production > Four-Door > Part 2 of 2GeneralOpen45.Electrical Diagrams > Lighting and Horns > Marker Lamp > Early Production > Two-Door > Part 1 of 2GeneralOpen46.Electrical Diagrams > Lighting and Horns > Marker Lamp > Early Production > Two-Door > Part 2 of 2GeneralOpen47.Electrical Diagrams > Lighting and Horns > Marker Lamp > Regular Production > Four-Door > Part 1 of 2GeneralOpen48.Electrical Diagrams > Lighting and Horns > Marker Lamp > Regular Production > Four-Door > Part 2 of 2GeneralOpen