The following file provides detail yet comprehensive discussion on 1992 BMW E30 318ic electrical parts troubleshooting and wiring diagram. Herein the manual, electrical components which work together are shown together on one schematic. Within the schematic, all switches and sensors are shown "at rest".
|Index of content:
how to use this manual
wiring and electric parts symbols
brake warning system
antilock brakeing system (ABS)
ignition key warning/seatbelt warning
light switch details