The 1991 BMW 850i (E31) represents a significant era in luxury grand touring, showcasing BMW's commitment to engineering excellence and avant-garde design. This flagship coupe, characterized by its distinctive 'shark nose' styling, pop-up headlights, and pillarless hardtop, was a direct competitor to other high-end vehicles of its time. Powered by a sophisticated V12 engine, the 850i was equipped with advanced technology for its period, including electronic throttle control and comprehensive onboard diagnostics. Its development as a clean-sheet design underscored BMW's ambition to create a benchmark in the luxury GT segment, a goal reflected in its powerful performance and refined driving dynamics.

This comprehensive wiring diagram manual is an essential resource for anyone involved with the 1991 BMW 850i E31. It provides detailed coverage of the vehicle's complete electrical system, including diagrams for engine management, powertrain control, chassis electrical components, comfort and convenience systems, instrumentation, audio, navigation, and safety systems such as ABS and airbags. The manual facilitates accurate diagnosis and repair by offering insights into component locations, connector pinouts, fuse and relay identification, and troubleshooting procedures for electrical faults. Its factory-level detail makes it invaluable for owners, mechanics, and technicians seeking to maintain and restore the intricate electrical architecture of this iconic BMW.