Rod, I am still with you and appreciate the depth of the discussion and information supplied.
GRJ and others, what wire would you use with the Molex connectors? I checked on LIONEL's website in the passenger car parts lists that use the pictured Molex connector, and LIONEL lists 24 awg super flex product by the foot.
For what I need, that old bugaboo, S&H, kills the economics for parts that aren't critical for my application. In this case, I'd like to assemble 10 female Molex connectors to mate with the LIONEL connectors in some new passenger car shells. But Mouser charges $7.95 to ship.
And where I am not trying to mate to a LIONEL connector, the JST's will work just fine w/o having to assemble anything.
Thanks, again, for all of the help--it's been an education.