I received a MTH Proto 3 set from Trainz today and it's a 5-pin connector like my old proto sound diesels. If I remember right my proto-2's have a 10pin but I could be wrong. My layout is down now so I can't test it, but I could open it up and give it a visual exam. Are the newer sets 5 or 10 I'm just worried since it's used it could be in the wrong box.
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