Denny:
In addition to what John will show you please beware that if your club is running TMCC/Legacy w/o any powermaster or TPC between the transformer and track the Z-4000 may not be appropriate to use. If there are powermasters or TPC's in between there should be no issue. TMCC and Legacy locos have been designed around chopped waveform transformers. The Z-4000 is basically a smooth wave. Smoke output and auto coupler action are sometimes affected. From what I understand both the powermaster and the TPC change the waveform to a chopped version.
https://www.youtube.com/watch?v=OMR25JoCZiU
Joe