Brian
A little more for you. This is the 1 3/8 he is referring to. When you remove the black jumper you kill all center rail power to the end of that track.
Then run a hot wire to your switch from your power source.
From the other side of the switch run a wire to the center rail of your track you killed. You then control power to that section of track with your switch.
The outside rails you can pick up your common any where you want.
Like Moonman said it is simple. Once you get good you can learn to cut the track pins and forget about the 1 3/8 piece. But that's a different story. Good luck
Larry
