non-electronic? You'll need to help me understand that one. The transformer that came with the Yardmaster set I was given in 1971 plugged into the wall just like the one I have now. It was a small black box with a silver lever and two round knobs that screwed down a stud thus trapping the 24 gauge wire it came with and making electrical contact. The other end of the wire hooked under the spring loaded clip of a ctc connector. Sorry but I'm unfamiliar with non-electric transformers. Please advise.
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