Are these switches going to be used for a siding? If so you may want to add an insulating pin for the center rail about 2 track sections away from the switch. If you put 2 022 switches back to back(switched sections) you need to add a short piece of straight track to keep the outside rail power continuous and put the insulating pins in the outside rails at the switch.
If you won't be using a lot power in your engine I find it best to use the constant voltage plug on the 022 switches.
Lee Fritz