Ok, I think I've got the picture.
I'm assuming when you say you have the z1000 transformer, you mean you also have the z-controller that goes with it for throttle, whistle/bell etc.
Start by hooking up the Z-1k and controller to your track. this should be pretty straight forward. The 120V plug is polarized so it will only go one way. The cord from the Z1000 brick then plugs in to the Z-Controller, and only goes one way. Black post on the Z-Controller to the outside rail, Red post to the center rail, Done.
Next you want to phase the KW to match the polarity of the KW to your track. If you have an AC voltmeter, that will make things pretty easy, but if not, let me know and I'll give some other options. Plug the KW in to the 120V outlet, connect the U post of the KW to the Black post of the Z-Controller. Next, place the AC volt meter between the Z-Controller Red post, and the A post on the KW. Turn up the throttle on both transformers maybe half way. If the meter reads near zero your transformers are in phase, if you see a reading of something like 20+VAC, unplug the KW and turn the plug around, then plug it back in. the meter should now be near zero.
Once the transformers are in phase, leave the KW's U post connected to the Black post of the Z. I would use one of the KW's throttles for your switch fixed voltage so you can adjust it for best performance. Wire the A (or B) post up to the fixed input on the O22's. Turn the throttle up to a voltage where the switches work well and you should be good to go.
Ok, maybe not quite good to go... You should still add TVS diodes (around 50 cents each), Probably one at each track feed, and across the KW between A and U, and B and U. The Z-Controller has a TVS in it, but this is to protect the controller, not your trains. I would also add a 5 to 7 amp circuit breaker on at least the common of the KW. The breaker on the Z1000 is plenty good enough for that, as long as you are not using the accessory terminals on the Z1000.
JGL
