HERE is a post with pictures of the innards of a Signal-Stat 700 switch.
Pretty clear that the two wires for the bulbs on each side have the same source.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.