Legacy/TMCC layout power questions

If the 2 loops have connected outside rails which I recommend, and the block is only Center Rail, you can use both power supplies ensuring they are phased correctly.

One wire from the CAB-1L Base to the outside rail (can be done at you common outside rail terminal strip) and your done.  You can use the DCS Remote Receiver passively on one loop, preferably the one using the MTH Z-1000.  G

It sounds as if you want a command only setup. If yes, I would say that you would have sufficient power using the MTH brick, connected through the receiver to the track or terminal strip.(see manual page attached) Maintain the current wiring. Feed both power divisions with the brick.

Then connect the Cab-1L base wire to the common.

 I am not really an MTH person, but I only see one problem. Isn't it recommended to reduce the voltage for a PS2 loco for battery charging? A moot point if you have a BCR. Perhaps G can chime in on this.

Thanks, sounds like the block plugged into the receiver then feeding into the terminal strips will work. My plan is to be command only and eliminate the blocks. I would really like to eliminate the two transformers - they take up quite a bit of real estate on the table. 

Lighted cars and older accessories could push you to the limit on the Z. If you have them, using the CW-80 for accessory power would be the solution. I would try the Z brick and see if it's enough.

Good luck!

Why not try it with the brick in command mode and see if you have any issues and save some work. Everything is wired and working now.

Keep track power for engines and cars.

Having the controller in place comes in handy for conventional ops, testing, throttling down voltage to 15-16 to limit speed for children, etc...  G