Please take a picture of the turnout (switch) you are using, and I (or someone else if they beat me to it) will sketch a wiring diagram for you.
-Kevin
Living the dream.
The point end of the switch is connected to the track for power. The exit end of the switch ( both tracks ) is isolated from the rails. The points will change the polarity of the frog.
Depends.
If it is a code 83 marketed by Walthers there are two versions. The earlier one is "power-routing" meaning the frog is fabricated with no insulating gaps and the point rails determine the polarity at the frog.
These need to have a gap or insulated joint on one or both of the rails coming off the frog.
A later "DCC Friendly" version is "all-live" variety and can be installed without the need for additional gaps but it would be advantageous to have power feeding the very long frog that a curved turnout usually has.
Look at the throw bar between the points. If there is plastic showing it is the DCC friendly type. If it is a solid strip of soldered nickel silver (top in photo) it is the earlier power routing type.
IMG_8651_fix by Edmund, on Flickr
Scroll to about the middle of this page and see the section on power routing.
Good Luck, Ed
How do you wire a shinaoraha curve switch for dcc?