Just to chime in, I use the halt button all the time to remove the track voltage in conventional. Not with a ZWL, but a brick and a TPC or powermaster. I can't imagine it being different with the ZWL. But he's running all Legacy, so perhaps the point is moot anyway.
I run my standard gauge trains with a TPC. You can set a stall voltage, a max voltage and it really helps to fine tune the performance of conventional trains. I use the halt button to take all the power off the track, and AUX1 - 4 to reinstate the stall voltage, which has been preset and is closer to the starting point of the engine. And again, halt, to remove all the power to the track. I would be surprised if you can't do all of the above with the ZWL. It seems to be basically 4 bricks and 4 TPCs rolled into one.
The key is the switch on the transformer which is set to either Command or Conventional.
When set to Command, it does as you suggest, all outputs respond to knob turning, halt works, I think stall and max can be set, etc.
When set to Conventional, the remote does not affect the outputs (and halt does not work), the transformer basically ignores the base, though TMCC/Legacy engines on the track will respond.
But we are drifting away from Marty's problem, which is a curious one.
-Dave
