Hello ,
I converted to fast track last weekend, and I bought a modern era 0-36" switch . I have removed the jumper to track power and wire the auxiliary in, and auxiliary ground to the posts on a CW-80 transformer. I even added another ground wire to the outside rail , and the ground post on the CW-80, I even cut the center pins on the switch , both thru , and out.
Now, when I power up the switch through the CW-80 independently, the locomotive powers up, and when it hits the switch , it goes wide open without Cab -1 control,( a short burst, but albeit when its on the siding ), I don't yet have a bumper .