Wiring Diagram Cluster
1990 Porsche 928 Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
36
Variant Used
928 GT V8-4957cc 5.0L
Total Vehicle Diagrams
263
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 Porsche 928 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.
B1318: Battery Voltage Low →Top Body Electrical Diagram Paths
1.Horn — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsLighting and HornsOpen2.Horn — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsLighting and HornsOpen3.Horn — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsLighting and HornsOpen4.Horn — Diagram Information and Instructions > How to Use DiagramsLighting and HornsOpen5.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen6.Horn — Electrical DiagramsLighting and HornsOpen7.Electrical Diagrams > Body and Frame > LocksGeneralOpen8.Electrical Diagrams > Body and Frame > MirrorsGeneralOpen9.Electrical Diagrams > Body and Frame > SeatsGeneralOpen10.Electrical Diagrams > Body and Frame > System DiagramGeneralOpen11.Electrical Diagrams > Lighting and Horns > HornGeneralOpen12.Electrical Diagrams > Lighting and Horns > System DiagramGeneralOpen13.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsBody and FrameOpen14.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsLighting and HornsOpen15.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsBody and FrameOpen16.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsLighting and HornsOpen17.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsBody and FrameOpen18.Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsLighting and HornsOpen19.Diagram Information and Instructions > How to Use DiagramsBody and FrameOpen20.Diagram Information and Instructions > How to Use DiagramsLighting and HornsOpen21.Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen22.Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen23.Electrical DiagramsBody and FrameOpen24.Electrical DiagramsLighting and HornsOpen25.Mirrors — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsBody and FrameOpen26.Mirrors — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsBody and FrameOpen27.Mirrors — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsBody and FrameOpen28.Mirrors — Diagram Information and Instructions > How to Use DiagramsBody and FrameOpen29.Mirrors — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen30.Mirrors — Electrical DiagramsBody and FrameOpen31.Seats — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ComponentsBody and FrameOpen32.Seats — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > ConnectorsBody and FrameOpen33.Seats — Diagram Information and Instructions > Component, Connector, Ground and Splice Locations > GroundsBody and FrameOpen34.Seats — Diagram Information and Instructions > How to Use DiagramsBody and FrameOpen35.Seats — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen36.Seats — Electrical DiagramsBody and FrameOpen
Exact Vehicle Hub
Browse →Likely Trouble Codes for This System
Browse →More 928 Wiring Pages
Same System, Other Vehicles
1990 Toyota Supra Body Electrical Wiring Diagram1993 Toyota Camry Sedan Body Electrical Wiring Diagram1993 Toyota Camry Wagon Body Electrical Wiring Diagram1990 Honda Prelude Body Electrical Wiring Diagram1994 Toyota Camry Sedan 2-Door Body Electrical Wiring Diagram1994 Toyota Camry Sedan 4-Door Body Electrical Wiring Diagram1994 Toyota Celica Body Electrical Wiring Diagram1995 Toyota Camry Coupe 2-Door Body Electrical Wiring Diagram