The yard is officially done. I can now start on track power / ground for the yard lead out to the inner main line. I wired the last two Atlas turnouts. I used the DZ-1011R along with the Atlas 200 snap relay - see wire schematic in last post.
I then wired in the two Atlas O and Gargraves uncoupling tracks. A photo is shown below.
The wiring for both are very different. The Atlas O uncoupling tack is connected to track ground through the track itself. The one wire screwed into the side of the track goes to a controller then to track power.
The Gargraves uncoupling track is a three wire affair. The white wire you see in the photo goes to track power. The black wire goes to the control box where another black wire is connected. This wire goes to track ground. Both tracks were tested and work just fine. Even though the Gargraves uncoupling track is more expensive than the Atlas O I like the looks better than Atlas O plus the magnetic bar is long so precise placement of the car uncoupler does not have to be as precise as for the Atlas O.
Below are more photos of the finished yard
