Hopefully the schematic I've attached below helps however I threw it together and you'll have to forgive me for it's crudeness.
The relay system is designed to turn my grounding switch on the stick to a positive 12v signal to the FPS.
As you can see the flap motor power goes through the FPS and the switch / relay system merely sens a signal to the FPS.
Flap retraction works normally as the switch on the stick is held until the flaps have reached full travel upward in which the FPS stops the actuator normally, all good here.
On extension however the FPS is designed for a single click to 10, second momentary click to 20.... However when I give the system a momentary signal via the stick switch the actuator starts to move but stops after I let off of the switch, not when it reaches 10 degrees on the flaps. Furthermore if I take the FPS wire for extension (Blue wire) and momentarily touch it to say pole 4 (12v) the actuator extends and continues to extend until reaching the next flap position.
Neither relay has a diode in place so I added a diode between the coil (7&8) and didn't have any luck. I talked to Bryan at Showplanes and its an issue of how the relay is interacting with the FPS. Curious if anybody has been able to solve this problem of driving the FPS with relay?