You actually don't need any toggles. This is very brief but it would go something like this......Z-4000 supplies power to the tiu fixed 1. Fixed 1 out to the track. Since fixed 1 is basically a straight though connection with the dcs signal imposed on it you can use the handle of the z-4000 for conventional , Set the handle to full voltage and now you can use the dcs remote for proto-2 /3 command operation .
TMCC ... Set the Z-4000 for full track voltage and hook the U connection on the command base to an out side rail. Run TMCC with the cab-1... I guess when we get into different loops there are other options. Come on over the DCS forum. Those guys will get you fixed up.
