Lenz Question

Anyboby out there know why I can not program a raw decoder to my program track with the outputs to my QSI sound system on a Lenz Set100?
I had it working this way years ago with a Digitrax Empire Builder. I would flip the program track to program set the decoder to the Loco # I was running and then switch it back to operate and then the syncro sound would work with the selected loco or locos. I have tried numerous decoders and they just will not program tied to the track leads with motor outputs to the QSI track input.

:confused:

Mike
PS I have tried to fool it with resistors and it still knows.