Believe it or not, this is my shot at neat, organized wiring. The center is common, one side is for the upper level powered by the RW, the other side is the lower level powered by the LW. The other terminals to be wired are for switches and accessories.
I also received some 5121/5122 controllers that I'm modifying to control our 497 coaling station.
Painted black to fit in with the control panel area.
baby steps...