There are two independent sets of terminals A and B for each of the SwitchPilot Extension ports. So you could use the A set to switch frog polarity and the B set to switch the supply to your signals. So forget all this wiring the signals to the track business. It is unnecessary if you use SwitchPilot Extension.
You could wire the signals so that when one road shows red the other shows green and vice versa using just the B terminals, by wiring the red LED from signal 1 and the green LED from signal 2 to terminal I and the the red LED from signal 2 and the green LED from signal 1 to terminal II. Then when you sentd the command to change hhe point the frog polarity and the signal aspects will change as well.
A word of caution, when using SwitchPilot Extension with SwitchPilot Servo t oswitch the frog polarity. Make sure that CV49 is set to use the "decelerated" values to delay switching of the ports on SP Extension. Otherwise the Extension could switch the frog polarity before the point blades have moved and cause a short.
You could wire the signals so that when one road shows red the other shows green and vice versa using just the B terminals, by wiring the red LED from signal 1 and the green LED from signal 2 to terminal I and the the red LED from signal 2 and the green LED from signal 1 to terminal II. Then when you sentd the command to change hhe point the frog polarity and the signal aspects will change as well.
A word of caution, when using SwitchPilot Extension with SwitchPilot Servo t oswitch the frog polarity. Make sure that CV49 is set to use the "decelerated" values to delay switching of the ports on SP Extension. Otherwise the Extension could switch the frog polarity before the point blades have moved and cause a short.