I have installed a Bachmann 1 amp decoder hopefully it will work. I have not tested it yet due to I have no DCC Controller yet, I was bidding for 1 on Ebay but got overrun at the finish!!! I noticed hen I pulled apart the loco that there was a lond then circuit board which had the wires soldered to it. It had 2 tips one on either side. I hope I wired it right!! I shall have to wit & see. Thanks for all your assistance.
Aussie Railroader

It is a Bachmann EMD GP 40 Diesel HO scale.
Its ok I worked it out mysef!!!
Now I have another qustion, How do I install a 1 amp decoder into the diesel?
I know I know there is instructions however I am new to this hobby & I know there are written instructions with the decoder but which wire is motor terminal 1 & which is motor terminal 2? Is motor teminal 1 the black or red wire? Pics would be nice!!!
Help would be appreciated

Aussie model rail enthusist

How do you pull apart the loco's?
I don't want to break any thing, so how do you do it?
Want to install DCC.