Wiring Diagram Cluster

1990 Pontiac Grand Prix 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

Grand Prix L4-138 2.3L DOHC QUAD 4

Total Vehicle Diagrams

623

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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 > HeadlightsGeneralOpen2.Headlamp — Electrical Diagrams > HeadlightsLighting and HornsOpen3.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Less STEGeneralOpen4.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > With STEGeneralOpen5.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Headlamps (Fog Lamps) > Less STEGeneralOpen6.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Headlamps (Fog Lamps) > With STEGeneralOpen7.Electrical Diagrams > Illuminated Entry & Security LightingLighting and HornsOpen8.Headlamp — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen9.Headlamp — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen10.Headlamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen11.Headlamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen12.Headlamp — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen13.Headlamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen14.Headlamp — Electrical Diagrams > Headlamps (Fog Lamps) > Less STELighting and HornsOpen15.Headlamp — Electrical Diagrams > Headlamps (Fog Lamps) > With STELighting and HornsOpen16.Components > Switches > Headlight Dimmer SwitchGeneralOpen17.Electrical Diagrams > Lighting and Horns > Backup Lamp > Except STEGeneralOpen18.Electrical Diagrams > Lighting and Horns > Backup Lamp > With STE & Lamp MonitorGeneralOpen19.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen20.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Dome, Front Header With Rear Courtesy & Inside Rear View MirrorGeneralOpen21.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Door Key Lock & Underhood Light, Door Courtesy & WarningGeneralOpen22.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Reading/Vanity & Inside Lighted Mirror, Front Header & CourtesyGeneralOpen23.Electrical Diagrams > Lighting and Horns > Dimmer SwitchGeneralOpen24.Electrical Diagrams > Lighting and Horns > Dome LampGeneralOpen25.Electrical Diagrams > Lighting and Horns > Fog/Driving Lamp > Less STEGeneralOpen26.Electrical Diagrams > Lighting and Horns > Fog/Driving Lamp > With STEGeneralOpen27.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Less STEGeneralOpen28.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With STEGeneralOpen29.Electrical Diagrams > Lighting and Horns > HornGeneralOpen30.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Less STEGeneralOpen31.Electrical Diagrams > Lighting and Horns > License Plate Lamp > With STEGeneralOpen32.Electrical Diagrams > Lighting and Horns > Map LightGeneralOpen33.Electrical Diagrams > Lighting and Horns > Marker Lamp > Less STEGeneralOpen34.Electrical Diagrams > Lighting and Horns > Marker Lamp > With STE > Front Park, & Rear Side Marker With Lamp MonitorGeneralOpen35.Electrical Diagrams > Lighting and Horns > Marker Lamp > With STE > Front Side Marker, Hazard & Turn Lamp MonitorGeneralOpen36.Electrical Diagrams > Lighting and Horns > Marker Lamp > With STE > License & Rear Marker With Lamp MonitorGeneralOpen37.Electrical Diagrams > Lighting and Horns > Parking LampGeneralOpen38.Electrical Diagrams > Lighting and Horns > System Diagram > Illuminated Entry & Security LightingGeneralOpen39.Electrical Diagrams > Lighting and Horns > System Diagram > With STE > Front Park, & Rear Side Marker With Lamp MonitorGeneralOpen40.Electrical Diagrams > Lighting and Horns > System Diagram > With STE > Front Side Marker, Hazard & Turn Lamp MonitorGeneralOpen41.Electrical Diagrams > Lighting and Horns > System Diagram > With STE > License & Rear Marker With Lamp MonitorGeneralOpen42.Electrical Diagrams > Lighting and Horns > System Diagram > With STE > Stop Lights With Lamp MonitorGeneralOpen43.Electrical Diagrams > Lighting and Horns > System Diagram > With STE > Tail With Lamp MonitorGeneralOpen44.Electrical Diagrams > Lighting and Horns > Tail Lamp > Less STE > License, Rear Marker & Tail LampGeneralOpen45.Electrical Diagrams > Lighting and Horns > Tail Lamp > Less STE > Stop LampGeneralOpen46.Electrical Diagrams > Lighting and Horns > Tail Lamp > STEGeneralOpen47.Electrical Diagrams > Lighting and Horns > Turn Signals > With STEGeneralOpen48.Electrical Diagrams > Lighting and Horns > Turn Signals > Without STEGeneralOpen

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Repairs That Intersect This Wiring

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1990 Pontiac Grand Prix 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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