Wiring Diagram Cluster
1990 Acura Legend Sedan 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
Legend Sedan V6-2675cc 2.7L SOHC FI
Total Vehicle Diagrams
1268
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 Acura Legend Sedan hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →OEM source
Factory Manual Evidence
When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.
Open interactive browser →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 — Diagnostic Aids > Continuity and Resistance CheckLighting and HornsOpen2.Headlamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Battery PrecautionsLighting and HornsOpen3.Headlamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrical Connections and CircuitsLighting and HornsOpen4.Headlamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component HandlingLighting and HornsOpen5.Headlamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component ReplacementLighting and HornsOpen6.Headlamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrostatic DischargeLighting and HornsOpen7.Headlamp — Diagnostic Aids > Damage Precautions > Proper Tools and Testing ProceduresLighting and HornsOpen8.Headlamp — Diagnostic Aids > Finding Short CircuitsLighting and HornsOpen9.Headlamp — Diagnostic Aids > Five Step TroubleshootingLighting and HornsOpen10.Headlamp — Diagnostic Aids > Troubleshooting PrecautionsLighting and HornsOpen11.Headlamp — Diagnostic Aids > Troubleshooting Tests > Testing For A Short With A Self-Powered Test Light or DVOMLighting and HornsOpen12.Headlamp — Diagnostic Aids > Troubleshooting Tests > Testing For a Short With a Short Circuit Locator (Short Finder)Lighting and HornsOpen13.Headlamp — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage Drop/Short to Ground With Test Light/DVOMLighting and HornsOpen14.Headlamp — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage/ContinuityLighting and HornsOpen15.Headlamp — Diagnostic Aids > Voltage CheckLighting and HornsOpen16.Headlamp — Diagnostic Aids > Wire Repair Procedures > Circuit Protection DevicesLighting and HornsOpen17.Headlamp — Diagnostic Aids > Wire Repair Procedures > Repairing ConnectorsLighting and HornsOpen18.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Crimp and Seal Splice SleevesLighting and HornsOpen19.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Copper Wire Using Splice ClipsLighting and HornsOpen20.Headlamp — Diagnostic Aids > Wire Repair Procedures > Splicing Twisted/Shielded CableLighting and HornsOpen21.Headlamp — Diagnostic Aids > Wire Repair Procedures > Terminal RepairLighting and HornsOpen22.Headlamp — Diagnostic Aids > Wire Repair Procedures > Typical Electrical RepairLighting and HornsOpen23.Headlamp — Diagram Information and Instructions > Key to Electrical Diagrams > Circuit SchematicsLighting and HornsOpen24.Headlamp — Diagram Information and Instructions > Key to Electrical Diagrams > Fuse Details SchematicsLighting and HornsOpen25.Headlamp — Diagram Information and Instructions > Key to Electrical Diagrams > Ground Distribution SchematicsLighting and HornsOpen26.Headlamp — Diagram Information and Instructions > Key to Electrical Diagrams > Power Distribution SchematicsLighting and HornsOpen27.Headlamp — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen28.Headlamp — Diagram Information and Instructions > Wires/Wire Color Code IdentificationLighting and HornsOpen29.Headlamp — Electrical DiagramsLighting and HornsOpen30.Electrical Diagrams > Daytime Running Lamp Control UnitGeneralOpen31.Electrical Diagrams > Headlamp > Headlamp SwitchGeneralOpen32.Electrical Diagrams > Headlamp > System DiagramGeneralOpen33.Electrical Diagrams > Interior Lighting ModuleGeneralOpen34.Electrical Diagrams > Trailer Lighting ModuleGeneralOpen35.Courtesy Lamp — Diagnostic Aids > Continuity and Resistance CheckLighting and HornsOpen36.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Battery PrecautionsLighting and HornsOpen37.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrical Connections and CircuitsLighting and HornsOpen38.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component HandlingLighting and HornsOpen39.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electronic Component ReplacementLighting and HornsOpen40.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Electrical Precautions > Electrostatic DischargeLighting and HornsOpen41.Courtesy Lamp — Diagnostic Aids > Damage Precautions > Proper Tools and Testing ProceduresLighting and HornsOpen42.Courtesy Lamp — Diagnostic Aids > Finding Short CircuitsLighting and HornsOpen43.Courtesy Lamp — Diagnostic Aids > Five Step TroubleshootingLighting and HornsOpen44.Courtesy Lamp — Diagnostic Aids > Troubleshooting PrecautionsLighting and HornsOpen45.Courtesy Lamp — Diagnostic Aids > Troubleshooting Tests > Testing For A Short With A Self-Powered Test Light or DVOMLighting and HornsOpen46.Courtesy Lamp — Diagnostic Aids > Troubleshooting Tests > Testing For a Short With a Short Circuit Locator (Short Finder)Lighting and HornsOpen47.Courtesy Lamp — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage Drop/Short to Ground With Test Light/DVOMLighting and HornsOpen48.Courtesy Lamp — Diagnostic Aids > Troubleshooting Tests > Testing For Voltage/ContinuityLighting and HornsOpen
Exact Vehicle Hub
Browse →Likely Trouble Codes for This System
Browse →More Legend Sedan Wiring Pages
Starter Wiring DiagramAlternator Wiring DiagramABS Brake 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
1990 Acura Integra Headlight Wiring Diagram1990 Acura Legend Headlight Wiring Diagram1993 Acura NSX Headlight Wiring Diagram1993 Acura Vigor Headlight Wiring Diagram1996 Acura RL Headlight Wiring Diagram1996 Acura TL Headlight Wiring Diagram2002 Acura CL Headlight Wiring Diagram2005 Acura RSX Headlight Wiring Diagram