The following electrical wiring diagram schematics harness and circuit troubleshooting manual apply for BMW E31 series including 840Ci, 850Ci and 850CSi 1994 models. The schematic diagram divide the entire vehicle electrical system into individual circuits, interacting electrical components are shown on one common schematic. Switches, relay, fuse, connectors and other components are represented in such way that their general layout and function are self-explicit. The components and wires are not drawn to scale. To ensure clear arrangement, all connectors, lines branches and connected components from the fuses to the components and vice versa are not shown within the individual cells. Find more information about 1994 BMW E31 840Ci 850Ci 850CSi Electrical Wiring Diagram Schematics Harness and Circuit here. (source: wikipedia.com, wedophones.com). Other BMW Automotive Wiring Diagram you might be interested in.