I have obtained a Bachmann Spectrum 4-6-0 (model no. 82301, 02,03,04, don't know which). It has a DCC decoder in it, but I want to run it on a standard DC layout. There is no 8-pin jumper plug to convert it to DC.
I have blank 8-pin plugs that I can use. How do I wire it to make the locomotive operate on standard DC?
Remove the decoder and replace with jumpers. If the board doesn't have an 8 pin socket then you can't use the jumper plug.
The following image shows a correct jumper plug, note to connect pins 1, 2 & 8 and pins 4, 5 & 6.
(http://model-railroad-hobbyist.com/sites/model-railroad-hobbyist.com/files/users/jimcol51/tender-dcc_card.jpg)
That's what I needed to know! Thanks!