I tried to power the SC-2 two ways. I know the instructions say do not use position 1 with Fastrack. To test, first I connected the three wires from the switch to the first position on the SC-2. That powers the SC-2 but then the switch doesn't work. Next I connected the 3 switch wires to the 2 position as indicated in the instructions for Fastrack switches. Since the SC-2 was now unpowered, I connected the wall outlet. I programmed the SC-2 for switches. When I use the CAB-1 the red light on the SC-2 flashes, I hear a click but the switches do not throw. I assume that the relay activated. The same thing happens for both of the old Fastrack 0-36 switches that I have connected.