I'll admit I'm not the sharpest light in the strand, so I need guidance on how to wire the signaling at the east end of Newburg. (Also the west end will be sort of a mirror image) where the yard lead joins the main line. As the diagram shows, there's a pot signal at the end of the yard lead. When the east switch is lined for the yard, this signal should be green, the mainline signal for the east and west main should be red and the diverging signal on the two headed one should read green. When the switch is lined for the main, the pot should be red and the two mainline signals should read green. (This is actually wrong because it should depend upon the train movement) This is a highly simplified version of how it should operate, but I'm not ready to commit for whole layout signaling yet.