First off I'm a noob so this may be old territory. I used a layout plan from this forum by attaching an o 42 rectangle with an o 31 rectangle. I placed them beside each other rather than one inside the other so if you can imagine a snowman without a head that is what we have.
I used o 71 switches connected into each other to link the tracks and keep things parallel.
So in my limited testing the caboose test car had sparking from the wheels on just one of the switches on the smaller loop. All sections of that loop are hot.
My concern is that there may be a loose wire within the switch but being new I hope someone here can shed some light.
