The drawing above is a very basic representation of the tracks and controls how they were originally set up. While it had preformed quite well several times as a terminal end module, the first time we attempted to use it in line between other modules did not work out so well. I had not considered that while the main line might be single track, the second track may extend to an adjoining module and that power may be routed by a turnout on that module. Another issue was that in this type of setup there was no way to control the cross overs independently.
Here is another drawing showing the basic representation of how the track circuits on the module are now controlled. Each crossover now has it's own control. Also one rail on each track was isolated and their connections are made through another pair of switches so either track next to the station platform can be turned off.
The mode switches used to select single or double track modes was no longer needed and was removed. In it's place I installed RCA jacks which are the AsiaNrail standard connection for turnout power. I don't use this power so these will just carry it thru the module using the last spare pair of wires on the 16 pin AMP connector.
The best place to do this was at the gap between the middle and small module as rails already have a gap there and I only needed to place some switches in the connection between the modules.
I have been testing the heck out of this and all seems good at this point so it's now on to more scenery.