Getting the solenoid shifter working and also the rev limiter (or better launch control) when the transbrake is activated, seems to be quite complicated in combination with the Autronic Ecu. And especially when you are not familiar with car electronics. Software settings is also difficult.
But we don’t give up, so at the end it will work. Just a matter of time.
After sleepness nights a made some schemes, and I think if a connect it this way it should work.