With a renewed interest in model railroading, I have been having much fun rebuilding (or trying to) diesel locomotives. My current project involves two GE-U36 engines (Santa Fe #350, "pancake" motor), one marked Bachmann Hong Kong and one marked Bachmann China. The Hong Kong version uses a front truck pickup, with rear truck drive without pickup (only two motor terminals, connected via a top "bus" to the front pickup). The China version uses the same front truck pickup, but the rear drive truck also has pickups (four motor terminals). I purchased a new truck/motor assembly from Bachmann, and upon inspection have noted that it too has both drive and pickup functions (four motor terminals).
Could anyone perhaps clarify these two configurations or offer advice on upgrading the apparently older "front pickup only" version to the newer front/back pickup configuration.
I have searched for some kind of wiring diagram without success. Thus, any information would be greatly appreciated.
(I tried to post two small photos of the different configurations, but this messaging system reports "upload folder full...contact administrator" which I will attempt to do.)
Jeff Anderson
West Des Moines, IA

I am trying to determine if the currently being sold "Bachmann EZ-Track Rail Joiners: (Bachmann HO 44499 EZ Track Rail Joiners 36 per card) are unique to EZ Track or if they will also work with original Bachmann HO track (i.e. vintage early 1990s without roadbed).
Could anyone offer an answer? Thanks so much...