Unless you can convince me otherwise, those holes are too tiny for anything above 26 gauge.
I use 18 gauge stranded wire in all 10 of my AIUs. It fits just fine.
I can't keep running around the room flipping switches, won't that degrade signal as well?
No, why would it?
My confusion is that the switch track by nature of the beast have to be connected to the track you are running the trains so by nature if the track is connected to the TIU so you can use the DCS system to run the trains, whether you connect to the auxiliary side and find a way to power the pieces alternatively, or leave it as is, you still run the signal through the switch motor by virtue of having the track piece connected to other track pieces on your layout.
I hope that makes sense.
No, that does not make sense.
The circuit for the motor and the tracks are completely separate (except for sharing the Common wire, perhaps) unless you make them the same. The DCS signal is carried on the Hot wire.
