Hello all,
I have finished my steering wheel upgrade. I succesfully used the "old" Clockspring and also figured out a way to do this without using the shift pedal signal port. So this would also work for AT cars.
As well I found a good source for single terminals. They are also much cheaper then the repair cables which can be bought from the dealership. So just the harness of the remote Buttons need to get New pins to match the old 10pin connector und some more pins and cables to build two little additional harnesses for the radio controls and the cluster controls.
If somebody is interessted I can try to make a little how to. Here is a pic of the final result:
