Wiring Diagram Cluster

1990 Subaru Legacy Headlight Wiring Diagram

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

Open Exact Vehicle Repair HubOpen Interactive Diagram BrowserBrowse All Wiring Diagrams

Matched Diagrams

48

Variant Used

Legacy Sedan 2WD F4-2.2L SOHC

Total Vehicle Diagrams

564

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 1990 Subaru Legacy hub with repairs, specs, codes, and other systems already tied to this car.

View vehicle repair hub →
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 > CanadaGeneralOpen2.Electrical Diagrams > Lighting and Horns > Headlamp > USAGeneralOpen3.Headlamp — Diagnostic Aids > Electrical Precautions > Battery PrecautionsLighting and HornsOpen4.Headlamp — Diagnostic Aids > Electrical Precautions > Electrical Connections and CircuitsLighting and HornsOpen5.Headlamp — Diagnostic Aids > Electrical Precautions > Electronic Component HandlingLighting and HornsOpen6.Headlamp — Diagnostic Aids > Electrical Precautions > Electronic Component ReplacementLighting and HornsOpen7.Headlamp — Diagnostic Aids > Electrical Precautions > Electrostatic DischargeLighting and HornsOpen8.Headlamp — Diagnostic Aids > Wire Repair Procedures > Circuit Protection DevicesLighting and HornsOpen9.Headlamp — Diagnostic Aids > Wire Repair Procedures > Repairing ConnectorsLighting and HornsOpen10.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Crimp and Seal Splice SleevesLighting and HornsOpen11.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Splice ClipsLighting and HornsOpen12.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Twisted/Shielded CableLighting and HornsOpen13.Headlamp — Diagnostic Aids > Wire Repair Procedures > Terminal RepairLighting and HornsOpen14.Headlamp — Diagnostic Aids > Wire Repair Procedures > Typical Electrical RepairLighting and HornsOpen15.Headlamp — Diagram Information and Instructions > Key to Wiring DiagramsLighting and HornsOpen16.Headlamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen17.Headlamp — Electrical Diagrams > CanadaLighting and HornsOpen18.Headlamp — Electrical Diagrams > USALighting and HornsOpen19.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen20.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen21.Electrical Diagrams > Lighting and Horns > Courtesy LampGeneralOpen22.Electrical Diagrams > Lighting and Horns > Dome Lamp > With Step LampGeneralOpen23.Electrical Diagrams > Lighting and Horns > Dome Lamp > Without Step LampGeneralOpen24.Electrical Diagrams > Lighting and Horns > Hazard Warning LampsGeneralOpen25.Electrical Diagrams > Lighting and Horns > HornGeneralOpen26.Electrical Diagrams > Lighting and Horns > Map LightGeneralOpen27.Electrical Diagrams > Lighting and Horns > System DiagramGeneralOpen28.Electrical Diagrams > Lighting and Horns > Tail LampGeneralOpen29.Electrical Diagrams > Lighting and Horns > Trunk LampGeneralOpen30.Electrical Diagrams > Lighting and Horns > Turn SignalsGeneralOpen31.Electrical Diagrams > Lighting and Horns > Vanity LampGeneralOpen32.Backup Lamp — Diagnostic Aids > Electrical Precautions > Battery PrecautionsLighting and HornsOpen33.Backup Lamp — Diagnostic Aids > Electrical Precautions > Electrical Connections and CircuitsLighting and HornsOpen34.Backup Lamp — Diagnostic Aids > Electrical Precautions > Electronic Component HandlingLighting and HornsOpen35.Backup Lamp — Diagnostic Aids > Electrical Precautions > Electronic Component ReplacementLighting and HornsOpen36.Backup Lamp — Diagnostic Aids > Electrical Precautions > Electrostatic DischargeLighting and HornsOpen37.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Circuit Protection DevicesLighting and HornsOpen38.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Repairing ConnectorsLighting and HornsOpen39.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Crimp and Seal Splice SleevesLighting and HornsOpen40.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Splice ClipsLighting and HornsOpen41.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Splicing Twisted/Shielded CableLighting and HornsOpen42.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Terminal RepairLighting and HornsOpen43.Backup Lamp — Diagnostic Aids > Wire Repair Procedures > Typical Electrical RepairLighting and HornsOpen44.Backup Lamp — Diagram Information and Instructions > Key to Wiring DiagramsLighting and HornsOpen45.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen46.Backup Lamp — Electrical DiagramsLighting and HornsOpen47.Diagnostic Aids > Electrical Precautions > Battery PrecautionsLighting and HornsOpen48.Diagnostic Aids > Electrical Precautions > Electrical Connections and CircuitsLighting and HornsOpen

Exact Vehicle Hub

Browse →
1990 Subaru Legacy Repair HubExact Vehicle

Open the exact vehicle hub for this wiring page to move into repair, manual, and code clusters without leaving the 1990 Subaru Legacy context.

Repairs That Intersect This Wiring

Browse →
1990 Subaru Legacy Headlight Bulb ReplacementRepair

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

Likely Trouble Codes for This System

Browse →
P0563: System Voltage HighCode

Electrical code commonly seen during headlight diagnosis.

More Legacy Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramFuel Pump Wiring DiagramABS Brake Wiring DiagramA/C & Heater 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

1993 Subaru Impreza Headlight Wiring Diagram1993 Subaru Legacy Headlight Wiring Diagram1993 Subaru SVX Headlight Wiring Diagram2005 Subaru Baja Headlight Wiring Diagram2005 Subaru Forester Headlight Wiring Diagram2005 Subaru Outback Headlight Wiring Diagram1990 Subaru XT Headlight Wiring Diagram1990 Toyota Supra Headlight Wiring Diagram