Bachmann "DCC Ready" locomotives

[Yampa Bob]

I buy a lot of Digitrax DH123P and 123PS decoders, they come with adapter harnesses, but since my Athearn and Roundhouse locos already have the JST socket, I have a good supply of spare harnesses in both 1" and 3".

Yep, that's a lot of wire to cram into the tender, but it does give you more options for decoder placement.  In the smaller 2-6-0 tender, I can put the decoder under the circuit board, then bring the wires up and over to connect the plug. The decoder shrink wrap provides insulation between the weights and circuit board.