0-6-0 decoder wiring

[Kernow]

Hi all

I have been given a decoder from a Bachmann HO 0-6-0 tender locomotive that had factory fitted DCC.

I believe this loco is the same as the 2-6-2 but without the leading and trailing trucks.

I would like to use the decoder but all the seven wires are black !

Does anyone have any idea how to identify which wire goes where ?

I have looked at the product reference details for the model but they are very basic and do not show a decoder, let alone how it is wired.

Any help would be greatly appreciated, thanks !