I have legacy hooked up this way.
From the Legacy base U terminal to the U terminal on the Legacy Powermaster.
From the ZW into the powermaster via the molex connector
From the powermaster to the track.
In conventional mode all works fine. I have a meter on the track and when turning the knob I see the voltage rise.
When I flip the switch on the powermaster to cmd I would expect to see 18 volts on the track. The ZW is outputting 18v at the terminals. I do not see 18 at the Powermaster output. I see what ever the last setting was. In other words if I had the wheel turned to produce 8.4 volts on the track, when flipping the switch to cmd I still see 8.4 on the track. Turning the knob at this point keeps the volts at 8.4 and the train moves. Via TMCC I would assume. However, as you might expect I do have very dim lights.
Should I run the U terminl from th Legacy base to my U terminal on the ZW instead? I do not think it should matter. At this point I am thinking defective Powermaster because I never see the volts rise when flipping the switch.