Vehicle wiring diagrams BMW 3 Series E21

This section contains schematic diagrams for the BMW E21 electrical system. These diagrams are for the 316, 318, 318A, 320, 320A, and 320i models, as well as the 320, 323, and 323A versions with six-cylinder engines. This material will help auto electricians and owners locate power circuits, fuses, relays, and connections. These diagrams are essential for diagnosing wiring and restoring factory electrical equipment.