OK guys, I decided to do one last set of tests. This was intended to be very thorough.
This is my outlet tester.
When the yellow and white lights go on, the wiring including the ground is correct.
This is the switched outlet under the layout into which the Legacy base gets plugged. The other plug is the TMCC base.
Here we have a good test.
My Legacy wall wart.
Plug undamaged.
Good wall wart in good outlet.
This is the location I have chosen to permanently place both bases.
This outlet is one in a long chain that goes around the aisles of the layout. It is on a different circuit from the switched one that the bases are plugged into. I plugged my small transformer into this one for the test.
The disconnected "Y" cable.
Both bases powered up, but not connected.
The test lead is attached to the U post on the Legacy base.
My test track for this experiment.
A small transformer, borrowed from my workbench.
A random engine grabbed from the layout. Note the brown wire tying the outside rails together.
Power up, lights on no movement. Matt was correct, the base works.
Now the "Y" cable is connected.
And now the TMCC base is part of the system.
Drum roll please!!!! And yes, that is a Cab-1 doing the work!
It still doesn't work on the layout, but there's no denying that it does work.
That was some nice low speed operation. I'm starting to see what I've been missing out on.