WTIU and Lionchief

I also have a MTH Cabforward # 4292 30-1144-1 Proto-Sound  Engine. How do I run this through the WTIU?

With the Z4000 connected to your fixed inputs. The WTIU should pass through power to the track. Once the WTIU is finished booting up you can run the PS1 engine just like before with the handles of the Z4000 with Bell & Horn functions that pass through the WTIU to the track.

If you want to run the PS1 engine with the MTH app. You will need to connect the Z4000 to the variable input and your track to the corresponding variable output. Then in the app, you'll need to go to the track screen and from there you can change the voltage and operate the bell & horn. You will need to have purchased the Premium upgrade in order to access the Track screen of the DCS app.