Hello all, I just bought an MTH TIU and AIU. I have 8 switches I need to wire to the AIU. I have a Z1000 power brick for the TIU. I have a Z4000 transformer for my layout as well as several Prewar Z Transformers. Anyone know how to wire up the Z4000 and Prewar Z transformers to the DCS System?? How do I wire up the switches to the AIU? Do the switches wire up to the transformers? Can I run conventional prewar Lionel locomotives?? Thanks, Jeff