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.

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Matched Diagrams

48

Variant Used

Regal V6-191 3.1L

Total Vehicle Diagrams

759

From Diagram To Fix

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Vehicle Repair Hub

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Headlight Bulb Replacement

Likely fix path

Exact Repair Guides

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

Headlight Bulb Replacement →

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 →

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 — Electrical Diagrams > Less Daytime Running LampsLighting and HornsOpen5.Headlamp — Electrical Diagrams > With Daytime Running Lamps > Early ProductionLighting and HornsOpen6.Headlamp — 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 — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen21.Headlamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen22.Headlamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen23.Headlamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen24.Headlamp — 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

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Repairs That Intersect This Wiring

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1991 Buick Regal Headlight Bulb ReplacementRepair

Open the matching repair workflow that usually intersects with headlight diagnosis on this vehicle.

Likely Trouble Codes for This System

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P0563: System Voltage HighCode

Electrical code commonly seen during headlight diagnosis.

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