Wiring Diagram Cluster
1990 Pontiac Firebird Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Firebird V6-191 3.1L
Total Vehicle Diagrams
593
From Diagram To Fix
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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.
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Vehicle Repair Hub
Step out of raw diagrams and into the full 1990 Pontiac Firebird hub with repairs, specs, codes, and other systems already tied to this car.
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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.
B1318: Battery Voltage Low →Top Body Electrical Diagram Paths
1.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Pull-to-Seat ConnectorsBody and FrameOpen2.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Push-to-Seat ConnectorsBody and FrameOpen3.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Cell ReferencesBody and FrameOpen4.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Schematic SymbolsBody and FrameOpen5.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Symbol IdentificationBody and FrameOpen6.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen7.Doors, Hood and Trunk > Trunk / Liftgate — Electrical Diagrams > Rear Compartment Lid Pull-DownBody and FrameOpen8.Doors, Hood and Trunk > Trunk / Liftgate — Electrical Diagrams > Rear Compartment Lid ReleaseBody and FrameOpen9.Horn — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen10.Horn — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen11.Horn — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen12.Horn — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen13.Horn — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen14.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen15.Horn — Electrical DiagramsLighting and HornsOpen16.Components > Motors > Door Lock MotorsGeneralOpen17.Components > Relays > Door Lock Relay AssemblyGeneralOpen18.Components > Relays > Horn RelayGeneralOpen19.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen20.Electrical Diagrams > Lighting and Horns > Brake Lamp > With Daytime Running LampsGeneralOpen21.Electrical Diagrams > Lighting and Horns > Brake Lamp > Without Daytime Running LampsGeneralOpen22.Electrical Diagrams > Lighting and Horns > Center Mounted Brake Lamp > With Daytime Running Lamps > Except Trans AmGeneralOpen23.Electrical Diagrams > Lighting and Horns > Center Mounted Brake Lamp > With Daytime Running Lamps > Trans AmGeneralOpen24.Electrical Diagrams > Lighting and Horns > Center Mounted Brake Lamp > Without Daytime Running Lamps > Except Trans AmGeneralOpen25.Electrical Diagrams > Lighting and Horns > Center Mounted Brake Lamp > Without Daytime Running Lamps > Trans AmGeneralOpen26.Electrical Diagrams > Lighting and Horns > Daytime Running LampGeneralOpen27.Electrical Diagrams > Lighting and Horns > Dimmer SwitchGeneralOpen28.Electrical Diagrams > Lighting and Horns > Dome LampGeneralOpen29.Electrical Diagrams > Lighting and Horns > Fog/Driving LampGeneralOpen30.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Except Trans AM > Part 1 of 3GeneralOpen31.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Except Trans AM > Part 2 of 3GeneralOpen32.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Except Trans AM > Part 3 of 3GeneralOpen33.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Trans AM > Part 1 of 3GeneralOpen34.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Trans AM > Part 2 of 3GeneralOpen35.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > With T61 > Trans AM > Part 3 of 3GeneralOpen36.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Without T61 > Except Trans AM > Part 1 of 2GeneralOpen37.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Without T61 > Except Trans AM > Part 2 of 2GeneralOpen38.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Without T61 > Trans AM > Part 1 of 2GeneralOpen39.Electrical Diagrams > Lighting and Horns > Hazard Warning Lamps > Without T61 > Trans AM > Part 2 of 2GeneralOpen40.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp MotorGeneralOpen41.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 1 of 2GeneralOpen42.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 2 of 2GeneralOpen43.Electrical Diagrams > Lighting and Horns > Headlamp > System DiagramGeneralOpen44.Electrical Diagrams > Lighting and Horns > HornGeneralOpen45.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Except Trans AMGeneralOpen46.Electrical Diagrams > Lighting and Horns > License Plate Lamp > Trans AMGeneralOpen47.Electrical Diagrams > Lighting and Horns > Map LightGeneralOpen48.Electrical Diagrams > Lighting and Horns > Marker Lamp > Front Marker, Hazard, High Level Stop, Parking, Stop and Turn > With Daytime Running Lamps > Except Trans AM > Part 1 of 3GeneralOpen
Exact Vehicle Hub
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Same System, Other Vehicles
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