It should be the same procedure for all e34s:
Take the 2 screws out of the cover from under the steering column
Unplug the air bag (organe connection)
Take the two bots out of the back of the steering wheel and take the cover off
Unplug the air bag (organe connection)
Mark the steering wheel on the shaft and take wheel off
Take the two screws out from the top of the instrument cluster
Which step are you having trouble with?