It covers E30, E36, E36/5 Compact, E36/7 Z3, E31 by model year and engine type

includes:

meaning of electric symbols
power distribution chart
fuse chart
power distribution
fuse details
ground distribution
data link
engine control system
charging system
start
electronic transmission control
supplemental restraint system (airbag)
slip control (ABS)
power mirrors
central locking system/module (ZVM)
power windows (FH)
power seats and lumbar support
heated seats
power sun roof (SHD)
horn
wiper/washer module (WWM)
headlight washer (SRA)
instrument cluster
multi function clock
light switch details
headlights/foglights
turn-/hazard lights
park-/tail lights
license plate/luggage compartment lights
back up lights
brake lights
interior lights
glovebox light/casette box/ashtray light/charging socket/cigar lighter
crask control module
park ventilation with IHKR
rear window defogger
integrated climate regulation
radio/stereo
radio/Hifi
cellular telephone (provisions)
cruise control (Tempomat)
anti-theft system (Alpine)
on-board computer (OBC V)
component location chart
component location views
splice location views
connector views

http://www.bmwtechinfo.com/etm/data/toc_cd2.pdf