Wiring Diagram Cluster
1987 Pontiac Fiero Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Fiero L4-151 2.5L
Total Vehicle Diagrams
381
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.
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Vehicle Repair Hub
Step out of raw diagrams and into the full 1987 Pontiac Fiero 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.
1987 Pontiac Fiero A L L Diagnostic Trouble Codes ( DTC ) →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.Electrical Diagrams > Lighting and Horns > System Diagram > Cigar Lighter, Clock & Trunk Lamp Wiring CircuitGeneralOpen2.Electrical Diagrams > Cigar Lighter, Clock & Trunk Lamp Wiring CircuitLighting and HornsOpen3.Horn — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen4.Horn — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen5.Horn — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen6.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen7.Horn — Electrical DiagramsLighting and HornsOpen8.Components > Modules > Dome Light ModuleGeneralOpen9.Components > Motors > Door Lock MotorsGeneralOpen10.Components > Relays > Door Lock Relay AssemblyGeneralOpen11.Components > Relays > Horn RelayGeneralOpen12.Components > Relays > Trunk Release RelayGeneralOpen13.Components > Solenoids > Trunk Release SolenoidGeneralOpen14.Components > Switches > Trunk Ajar SwitchGeneralOpen15.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen16.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp CoverGeneralOpen17.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp MotorGeneralOpen18.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 1 of 2GeneralOpen19.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp Switch > Part 2 of 2GeneralOpen20.Electrical Diagrams > Lighting and Horns > Headlamp > System DiagramGeneralOpen21.Electrical Diagrams > Lighting and Horns > HornGeneralOpen22.Electrical Diagrams > Lighting and Horns > System Diagram > Console & Underhood LampGeneralOpen23.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 1 of 6GeneralOpen24.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 2 of 6GeneralOpen25.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 3 of 6GeneralOpen26.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 4 of 6GeneralOpen27.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 5 of 6GeneralOpen28.Electrical Diagrams > Lighting and Horns > System Diagram > Exterior Lamps > Part 6 of 6GeneralOpen29.Electrical Diagrams > Trunk / Liftgate Solenoid > Automatic TransaxleGeneralOpen30.Electrical Diagrams > Trunk / Liftgate Solenoid > Manual TransaxleGeneralOpen31.Backup Lamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen32.Backup Lamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen33.Backup Lamp — Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen34.Backup Lamp — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen35.Backup Lamp — Electrical DiagramsLighting and HornsOpen36.Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen37.Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen38.Diagram Information and Instructions > Symbol IdentificationLighting and HornsOpen39.Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen40.Electrical Diagrams > Console & Underhood LampLighting and HornsOpen41.Electrical Diagrams > Exterior Lamps > Part 1 of 6Lighting and HornsOpen42.Electrical Diagrams > Exterior Lamps > Part 2 of 6Lighting and HornsOpen43.Electrical Diagrams > Exterior Lamps > Part 3 of 6Lighting and HornsOpen44.Electrical Diagrams > Exterior Lamps > Part 4 of 6Lighting and HornsOpen45.Electrical Diagrams > Exterior Lamps > Part 5 of 6Lighting and HornsOpen46.Electrical Diagrams > Exterior Lamps > Part 6 of 6Lighting and HornsOpen47.Headlamp — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen48.Headlamp — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen
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