A guy on GSC sent me a pic of the back of his cab, and his C16 is one of the newer ones, with a pnp socket in the tender. That big connector carries wheel pickups to the tender and carries power back to the motor. As far as I recall, it won’t run without something plugged in or a rewire.
I have a spare tender with an old 2-pin connector, which he wants to use. We can make it work, but it would be easier if we know how the big plug is wired. Anyone have or know a source for a diagram?