This is the other end of the turnout control the under side of the lay out. The music wire is the main driver of the throw bar for the switch points. The spring ensures a full return when the knob is turned back to the main position. The read and Black wires are the main bus and track feeders that run all around the lay out to supply the voltage to the track.
HO model railroad set in my minds eye of scenery I'v seen over my lifetime. The main operation of the railroad will be based on the Verde Tunnel and Smelter Railroad in my home town of Clarkdale AZ.