Wiring Diagram Cluster
1985 Pontiac Grand Prix Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
47
Variant Used
Grand Prix V6-231 3.8L
Total Vehicle Diagrams
429
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 1985 Pontiac Grand Prix 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.
1985 Pontiac Grand Prix 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.Horn — Diagnostic AidsLighting and HornsOpen2.Horn — Diagram Information and InstructionsLighting and HornsOpen3.Horn — Electrical DiagramsLighting and HornsOpen4.Components > Motors > Door Lock MotorsGeneralOpen5.Components > Relays > Door Lock Relay AssemblyGeneralOpen6.Components > Relays > Horn RelayGeneralOpen7.Components > Solenoids > Station Wagon Tailgate Release SolenoidGeneralOpen8.Components > Solenoids > Trunk Release SolenoidGeneralOpen9.Components > Switches > Driver's Door Lock SwitchGeneralOpen10.Components > Switches > Passenger's Door Lock SwitchGeneralOpen11.Components > Switches > Trunk Release SwitchGeneralOpen12.Electrical Diagrams > HornGeneralOpen13.Electrical Diagrams > Trunk / Liftgate SolenoidGeneralOpen14.Electrical Diagrams > Trunk LampGeneralOpen15.Backup Lamp — Diagnostic AidsLighting and HornsOpen16.Backup Lamp — Diagram Information and InstructionsLighting and HornsOpen17.Backup Lamp — Electrical DiagramsLighting and HornsOpen18.Courtesy Lamp — Diagnostic AidsLighting and HornsOpen19.Courtesy Lamp — Diagram Information and InstructionsLighting and HornsOpen20.Courtesy Lamp — Electrical Diagrams > Courtesy & Dome Lamps > 2 DoorLighting and HornsOpen21.Courtesy Lamp — Electrical Diagrams > Courtesy & Dome Lamps > 4 Door > Less Door Courtesy LampLighting and HornsOpen22.Courtesy Lamp — Electrical Diagrams > Courtesy & Dome Lamps > 4 Door > With Door Courtesy LampsLighting and HornsOpen23.Courtesy Lamp — Electrical Diagrams > License Plate, Opera, Rear Marker & Tail Lamp > 2 DoorLighting and HornsOpen24.Courtesy Lamp — Electrical Diagrams > License Plate, Opera, Rear Marker & Tail Lamp > 4 DoorLighting and HornsOpen25.Hazard Warning Lamps — Diagnostic AidsLighting and HornsOpen26.Hazard Warning Lamps — Diagram Information and InstructionsLighting and HornsOpen27.Hazard Warning Lamps — Electrical Diagrams > Front Marker, Hazard, Park, Stop & Turn Lamp > 2 DoorLighting and HornsOpen28.Hazard Warning Lamps — Electrical Diagrams > Front Marker, Hazard, Park, Stop & Turn Lamp > 4 DoorLighting and HornsOpen29.Hazard Warning Lamps — Electrical Diagrams > Rear Hazard, Stop & Turn Lamp Wiring CircuitLighting and HornsOpen30.Headlamp — Diagnostic AidsLighting and HornsOpen31.Headlamp — Diagram Information and InstructionsLighting and HornsOpen32.Headlamp — Electrical DiagramsLighting and HornsOpen33.Locks > Power Locks — Diagnostic AidsBody and FrameOpen34.Locks > Power Locks — Diagram Information and InstructionsBody and FrameOpen35.Locks > Power Locks — Electrical DiagramsBody and FrameOpen36.Roof and Associated Components > Sunroof / Moonroof — Diagnostic AidsBody and FrameOpen37.Roof and Associated Components > Sunroof / Moonroof — Diagram Information and InstructionsBody and FrameOpen38.Roof and Associated Components > Sunroof / Moonroof — Electrical DiagramsBody and FrameOpen39.Seats — Diagnostic AidsBody and FrameOpen40.Seats — Diagram Information and InstructionsBody and FrameOpen41.Seats — Electrical Diagrams > Part 1 of 2Body and FrameOpen42.Seats — Electrical Diagrams > Part 2 of 2Body and FrameOpen43.Turn Signals — Diagnostic AidsLighting and HornsOpen44.Turn Signals — Diagram Information and InstructionsLighting and HornsOpen45.Turn Signals — Electrical Diagrams > Front Marker, Hazard, Park, Stop & Turn Lamps > 2 DoorLighting and HornsOpen46.Turn Signals — Electrical Diagrams > Front Marker, Hazard, Park, Stop & Turn Lamps > 4 DoorLighting and HornsOpen47.Turn Signals — Electrical Diagrams > Rear Hazard, Stop & Turn LampsLighting and HornsOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1985 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1985 Pontiac Firebird V8-305 5.0L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
1985 Pontiac Grand Prix A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1985 Pontiac J2000/Sunbird L4-112 1.8L Service Manual | Operation CHARM Operation CHARM : Car repa...
Likely Trouble Codes for This System
Browse →More Grand Prix Wiring Pages
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