I found this post from Stan. It looks pretty simple and should fit in well with your plans. I'm duplicating the drawing here to make it easy to reference.
The blue wire is 14 volts AC to power the switch machine. This is more of a "snap" type switch using a solenoid to move the points. The coils should be engaged only momentarily. The green and red wires are AC ground directed by the toggle switch to the proper position for the turnout. If this is all correct, you should have no problems with your turnouts.
It looks like there are indicators for turnout position on the stock controller but I can't be sure of that. The non-derail feature is built in mechanically using a spring just like a real spring switch. No electrical worries there.
