I played around with it for four hours last nite and cannot get it to work. I am trying to connect my TMCC set up on an Atlas track. My SC - 2 is only partially working; Unit works properly when I hit the through switch; but the SC -2 does nothing when I hit the turn-off switch. According to the directions the red light on the SC 2 should flcker when in use, but it does not when I push the turn-off button. Can anybody advise what I am doing wrong? What would cause this problem? Thanks a bunch.