Don't hook up the switch controllers to the dcc buss. You can hook it to the power supply (if your system uses a seperate power supply) before it goes to the command station. I have done this on my home layout and the N layout at my club. If you have voltage selection on your system be sure to use the N gauge voltage position. If you don't have this feature use a seperate power supply.
I'm building an N scale layout and using MRC prodigy express DCC . I recently bought a bunch of lifelike turnouts that have remote switch control for controlling the turnouts. Can I hook these turnouts into the bus wire with feeder wires like the feeders for track power, or will I have to use a seperate power pack for this? If so , will the power pack need different wiring? Thanks for the help.