http://web.archive.org/web/200812292.../e34a/id4.html
you should have asked me, some years ago I found it with the wayback machine already and most of the things are now saved on my website under other BMW models and the author and the source is mentioned http://twrite.org/shogunnew/topmenu.html
These DIY tips were too good to disappear in the internet nirwana nonono
Rustam's work was always top-notch. Good work- both of you.
I remember once rebuilding my HP22EH shift switch with Rustam's very useful info. Still works (100%)
And great that this effort is not lost to us, (yet)!