I have a Southern Pacific 2-8-0 with DCC on board.  I would like to swap out the stock rectangular tender for the Vanderbilt tender, but when I do, the locomotive only sits there and the tender buzzes.  The Vandy has a NCE D14SRP installed in it.  I noticed that the connector is upside down and backward, and upon removing the shell, the wiring in the Vandy is totally different than in the stock tender.  Does anyone have an idea about what to do in order to get the thing to work?