I have finished the wiring for the hidden yard reverse loop. This includes the automatic control of the reverse loop turnout and the electrical polarity of the reverse loop track. A DBD22 was used to detect two short sections of track next to the turnout. Based on which section is occupied the DBD22 controls a Servette which in turn drives a servo to correctly move the turnout. The relay on the Servette is used to reverse the polarity of the track.

With this done I run the first train (two locos and two cleaning cars) down through the hidden yard around the reverse loop and back out on the main.