You might want to try posting this question on the "Toy Train Operating and Collecting" forum. Most of the folks on this forum are two rail types. I doubt if you will get an answer here.
Elmer.
The above is my opinion, from an active and experienced Model Railroader in N scale and HO since 1961.
(Modeling Freelance, Eastern US, HO scale, in 1962, with NCE DCC for locomotive control and a stand alone LocoNet for block detection and signals.) http://waynes-trains.com/ at home, and N scale at the Club.
I have a Lionel #5530/ remote uncoupler, unload track. The wires were brittle so I replace the wire thinking I rewired the unit the same way.... WRONG I can't get it to work.
Can anyone share the 4 wire connection.
Thanks