decoder installation in 45 ton diesel

[CustomRCmodels]

Is there a electrical circuit diagram available for the 45 ton diesel ?
Since in the descriptions it said DCC ready ,
but it doesn't tell what is what on the installed boards .
I have several of these nice large diesel-loco's and installed in several of them decoders from different manufactures and some I have running with radio control ...
But I always junked the installed boards and wired everything directly ...
Since I have a few extra ones ( still in box ) of them now for sale
I want to install decoders ,
but want to do it without junking the already installed boards ...
I could trace all that back , but if there is a circuit diagram available ,
that would make things much nicer ...

Willy
CustomRCmodels

[CustomRCmodels]

sorry guys ,
I am feeling stupid now !
it helps sometimes to look at the paperwork included !

Willy
CustomRCmodels