Lionel Uncoupler Wiring Diagrams . Check & test wires and devices regarding power inside the box you are usually working in to stop electric shock before working on them. Push button wiring for lionel o27 uncoupler tracks. Push button wiring for Lionel O27 uncoupler tracks O Gauge from ogrforum.ogaugerr.com If anyone else is interested is was actually easier to wire the lionel ones than the gargraves and the lionel controllers are way more user freindly. This is just one of the solutions for you to be successful. Lionel accessories at work on toy train layouts neil besougloff 2006 add classic accessories to your toy train layout.