now I do a little more using the navigation in the sim and I first tried the B58 for this.
It all works fine including ILS approach but the RMI does not.
The ADF potion of the instrument works but the green VOR 2 needle always points to the West.
In FSX and P3d with the stock Baron it always indicates the direction to the VOR 2 which is activated in the radios.
The VOR 2 Instrument in Aerofly Baron 58, which also has the OBS knob, works fine.