Wiring Diagram Cluster
1987 Buick Riviera Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
Riviera V6-231 3.8L
Total Vehicle Diagrams
422
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 Buick Riviera 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 Buick Riviera 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 > Courtesy Lamp > System Diagram > Rear Quarter, Trunk & Glove BoxGeneralOpen2.Electrical Diagrams > Lighting and Horns > Map Light > Rear Quarter, Trunk & Glove BoxGeneralOpen3.Electrical Diagrams > Lighting and Horns > Trunk LampGeneralOpen4.Courtesy Lamp — Electrical Diagrams > Rear Quarter, Trunk & Glove BoxLighting and HornsOpen5.Doors, Hood and Trunk > Fuel Door — Diagram Information and InstructionsBody and FrameOpen6.Doors, Hood and Trunk > Fuel Door — Electrical DiagramsBody and FrameOpen7.Horn — Diagram Information and InstructionsLighting and HornsOpen8.Horn — Electrical DiagramsLighting and HornsOpen9.Locks > Power Locks — Electrical Diagrams > With Automatic Door LocksBody and FrameOpen10.Locks > Power Locks — Electrical Diagrams > Without Automatic Door LocksBody and FrameOpen11.Components > Miscellaneous Components > Horn Brush/Slip RingGeneralOpen12.Components > Miscellaneous Components > Keyless Entry Keyboard AmplifierGeneralOpen13.Components > Miscellaneous Components > Trunk Lid Pull Down UnitGeneralOpen14.Components > Modules > Automatic Door Lock ModuleGeneralOpen15.Components > Modules > Body Computer ModuleGeneralOpen16.Components > Modules > Keyless Entry ModuleGeneralOpen17.Components > Motors > Door Lock MotorsGeneralOpen18.Components > Relays > Door Lock RelayGeneralOpen19.Components > Switches > Horn SwitchGeneralOpen20.Components > Switches > Trunk Lid Tamper SwitchGeneralOpen21.Connector Views > Body Control ModuleGeneralOpen22.Electrical Diagrams > Body Control Module (BCM)Powertrain ManagementOpen23.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > Door/Trunk Ajar Indicator/LampGeneralOpen24.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen25.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen26.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Ash Tray LampGeneralOpen27.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Door Lamp > Courtesy Lamps (Part 1 of 2)GeneralOpen28.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Door Lamp > Courtesy Lamps (Part 2 of 2)GeneralOpen29.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Glove Box LampGeneralOpen30.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Courtesy LampsGeneralOpen31.Electrical Diagrams > Lighting and Horns > Dome Lamp > Courtesy Lamps (Part 1 of 2)GeneralOpen32.Electrical Diagrams > Lighting and Horns > Dome Lamp > Courtesy Lamps (Part 2 of 2)GeneralOpen33.Electrical Diagrams > Lighting and Horns > Hazard Warning LampsGeneralOpen34.Electrical Diagrams > Lighting and Horns > Headlamp > With Sentinel DimmingGeneralOpen35.Electrical Diagrams > Lighting and Horns > Headlamp > Without Sentinel DimmingGeneralOpen36.Electrical Diagrams > Lighting and Horns > HornGeneralOpen37.Electrical Diagrams > Lighting and Horns > Map Light > Courtesy LampsGeneralOpen38.Electrical Diagrams > Lighting and Horns > Marker LampGeneralOpen39.Electrical Diagrams > Lighting and Horns > Parking LampGeneralOpen40.Electrical Diagrams > Lighting and Horns > System Diagram > Part 1 of 2GeneralOpen41.Electrical Diagrams > Lighting and Horns > System Diagram > Part 2 of 2GeneralOpen42.Electrical Diagrams > Lighting and Horns > Tail LampGeneralOpen43.Electrical Diagrams > Lighting and Horns > Turn Signals > Part 1 of 3GeneralOpen44.Electrical Diagrams > Lighting and Horns > Turn Signals > Part 2 of 3GeneralOpen45.Electrical Diagrams > Lighting and Horns > Turn Signals > Part 3 of 3GeneralOpen46.Electrical Diagrams > Power Locks > With Automatic Door LocksGeneralOpen47.Electrical Diagrams > Power Locks > Without Automatic Door LocksGeneralOpen48.Electrical Diagrams > Powertrain Management > System Diagram > Body Control Module (BCM)GeneralOpen
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