Nothing to it Ron.
The track power comes into the common of all the SC-2 relays (note that I have separated Relay #1 from aux power to totally isolate it on all of my SC-2 boxes). I wire the whisker track center rail to the N/O output of each relay of the SC-2. I program the SC-2 for all accessory control. Then I just press ACC / # / AUX2 to toggle the respective whisker track power where # is the whisker track number from 01 through 16 in my case. The last two channels on the 3rd SC-2 are used to control TT rotation, number 17 & 18, you toggle them on and off with AUX2 as well. With the Atlas, you just let it run until the Geneva drive gets to the track and then toggle off the motor. I'll leave the TT bridge powered all the time so I don't need another power control, I don't really see any downside of doing that.
