Points Motor and Signal switching

First Points Motor with signal switching is operational. Power is picked off the constant but reversing 12VDC - applied to the linear actuator (the blue and white wires) - rectified through a diode bridge (on the small board). +ve is supplied to the micro switch and fed back to 2 sets of 'Red or Green' signal pins - which have a -ve pin each side to allow simple reversing.

The signals are powered by picking off the AC (reversing polarity) 12V for the actuator, rectifying with a diode bridge, changing with a microswitch acting from the actuator ram, then out to a set of pins for -VE, Red, Green, -VE, so that signal polarity can easily be selected by reversing the plug.

The extra sets of pins can be connected to any of the 4 spare wires in the 6 core cable to the box, and hence to remote signals or a distant signal...