@AlanRail posted:Tom
the reason these were 3D designed to be surface-mounted is because I have an existing control panel.
This elaborate enclosure is hiding three momentary contact switches. No reason that you cannot provide 3 holes in your panel along the three paths for these switches to mount (under) a Lexan or acrylic (I use acrylic on my laser-cutter} control panel; then add adjacent bicolor LEDs. Same is true for the 4-way.
the problem I have had with two LEDs, is that even set to one direction, both LEDs are lit, the undirected LED is slightly illuminated not completely off.
a Ross, or Lionel or MTH turnouts are actually a large locking relays. the DZ-2500Cs have yellow and green wires used for non-derailing but can also be connected to a DZ-1008 relay to control or set LEDs. See Ross and DZ's websites for circuit diagrams for 3-way switches, too.
Thank You Alan. I may be interested in talking to you further about these.
Tom