Have you tried Bruno's site? This may be what you need http://www.bmwe34.net/e34main/upgrade/OBC.htm
Ian
Hello All
I'm new here. I followed the upgrade artical which explained how to add an OBC in place of the standard clock. Unfortunately, my E34 clock has only 3 wires into the connector at the back hence the OBC will not work.
Does anybody have a wiring diagram that might help me to wire it in?
Have you tried Bruno's site? This may be what you need http://www.bmwe34.net/e34main/upgrade/OBC.htm
Ian
http://www.carsoft.ru/avtorepair/bmw...1.0/index.html
Also bookmark this one:
http://www.carsoft.ru/avtorepair/bmw_e34/E34.html
Javier