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Otto,This image is the wiring set up out of a B'man EM-1. I know your 2-10-2 is not a two engine loco as the EM-1 is but the wiring will most likely be the same.In this jpeg you can see the "board" that was in the boiler with the all black leads to their plug. On the green board is a right (R) pickup connection and another further up the board. In looking at back side these two are connected together so their must be one for each engine. The same applies to the left side (L) pickup. The other wires are self explanatory and I think you can read the lettering in this picture. I think it is strange that the wiring is not NMRA standard colors, but that is just B'man.Otto I hope this sheds some light and even tho this is from the EM-1, I would believe the 2-10-2 is basically the same. BTW, I wired an ESU Loksound Micro according to the green board connections (hard wired) and it worked fine. Can't answer the female plug issue.Regards and always have fun,Carl
Thanks Pete, appreciated! Unfortunately, all the photos in the first link appear to be gone Your tender wiring diagram is amazing. This tender has a different board, see pic. Power between tender and loco is connected via two drawbar copper wires. My 2-10-2 Bachmann loco mechanism is getting a new boiler and an entirely new tender. My intent is to retain the loco (female) side of the harness as is, and create the tender side (male) pins and wire them properly lest I smoke a decoder, and I still don't fully understand how the loco side is wired. There is a L and R pin, in addition to the separate drawbar connections? That doesn't make sense to me...Otto
My Walthers 0-8-0 does have the same plug, so the eBay parts will work. I do not know the pin-out of the Walthers harness. It would be really interesting if they were fully compatible with the Bachmann boards.I really wish Walthers had that narrow coal bunker tender available separately.