61 35... Control units, switches, relays
WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.
With effect from E38, all schematics, installation locations of electrical components such as control units, switches, relays, connectors, pin allocation of control units and function descriptions for individual systems are described in the Diagnosis Information System (DIS). The procedure describing how to call up each of the components is described in the DIS Handbook under Point 14.5 Documents.