Wiring Diagram Cluster
1991 Buick Century Headlight Wiring Diagram
Find headlight circuit schematics, high/low beam relay paths, DRL wiring, and ground points for lighting diagnosis.
Matched Diagrams
47
Variant Used
Century L4-151 2.5L VIN R TBI
Total Vehicle Diagrams
522
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 Century hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →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.Headlamp — Electrical Diagrams > Less Daytime Running LampsLighting and HornsOpen2.Headlamp — Electrical Diagrams > With Daytime Running LampsLighting and HornsOpen3.Components > Modules > Daytime Running Lamps (DRL) ModuleGeneralOpen4.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > Less Daytime Running Lamps > Part 1 of 3GeneralOpen5.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > Less Daytime Running Lamps > Part 2 of 3GeneralOpen6.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > Less Daytime Running Lamps > Part 3 of 3GeneralOpen7.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > With Daytime Running Lamps > Part 1 of 3GeneralOpen8.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > With Daytime Running Lamps > Part 2 of 3GeneralOpen9.Electrical Diagrams > Headlamp > Headlamp Switch > Coupe and Sedan > With Daytime Running Lamps > Part 3 of 3GeneralOpen10.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > Less Daytime Running Lamps > Part 1 of 3GeneralOpen11.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > Less Daytime Running Lamps > Part 2 of 3GeneralOpen12.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > Less Daytime Running Lamps > Part 3 of 3GeneralOpen13.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > With Daytime Running Lamps > Part 1 of 3GeneralOpen14.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > With Daytime Running Lamps > Part 2 of 3GeneralOpen15.Electrical Diagrams > Headlamp > Headlamp Switch > Station Wagon > With Daytime Running Lamps > Part 3 of 3GeneralOpen16.Electrical Diagrams > Headlamp > System Diagram > Less Daytime Running LampsGeneralOpen17.Electrical Diagrams > Headlamp > System Diagram > With Daytime Running LampsGeneralOpen18.Headlamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen19.Headlamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen20.Headlamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen21.Headlamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen22.Headlamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen23.Components > Switches > Headlight Dimmer SwitchGeneralOpen24.Backup Lamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen25.Backup Lamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen26.Backup Lamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen27.Backup Lamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen28.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen29.Backup Lamp — Electrical DiagramsLighting and HornsOpen30.Hazard Warning Lamps — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen31.Hazard Warning Lamps — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen32.Hazard Warning Lamps — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen33.Hazard Warning Lamps — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen34.Hazard Warning Lamps — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen35.Hazard Warning Lamps — Electrical DiagramsLighting and HornsOpen36.Horn — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen37.Horn — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen38.Horn — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen39.Horn — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen40.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen41.Horn — Electrical DiagramsLighting and HornsOpen42.Turn Signals — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen43.Turn Signals — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen44.Turn Signals — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen45.Turn Signals — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen46.Turn Signals — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen47.Turn Signals — Electrical DiagramsLighting and HornsOpen
Exact Vehicle Hub
Browse →Repairs That Intersect This Wiring
Browse →Likely Trouble Codes for This System
Browse →More Century Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramAirbag SRS Wiring DiagramEngine Management Wiring DiagramBody Electrical Wiring Diagram
Same System, Other Vehicles
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