OK, I finally hooked up a pair of my Ross Regular 11, crossover switches in final permanent fashion.
The switch machines are DZ-1000's, and I have both switches operating with one single actuator.
Without the non-derailing wires hooked up to the terminal block, the switches work perfectly, as they both switch, together, to either turnout, or straight thru, and all lights function correctly as well.
However, when I connect the wires from the two straight rails, for non-derailing, to the terminal block, with the other green wires, the lights on the actuator stay dark, and when I push one of the buttons the switches flutter back and forth, and when I push the other button, nothing happens.
I tested this out with alligator clips prior to drilling holes and fishing wires thru the table, and to terminal blocks, and they worked perfectly. I had the green wires hooked together, the yellow wires hooked together, and the red wires hooked together. When I connected the ground to that opposite rail, then rolled a truck over the straight section of either switch, if it was set to turnout, it switched to straight thru.
The odd thing is that these rails are completely insulated, so they should have no effect until a truck caries the ground over to that rail.
In the pic below, the red arrows show the connected rails, and the yellow arrows are where these rails are insulated.
The lower rail has an insulator pin installed, and the top one is not connected to anything at all. Also attached is a sketch of my wiring diagram.