Yeah, that is why I said I'd be happy either way. I don't know the full guts of what it means on the above, but suspect that since it is an older TMCC, that it will be wired most likely. I passed along this topic since this is one great topic that shouldn't be missed by those doing upgrades.
I know I'd never be able to connect the right wires to anything, and every engine would smoke even if it wasn't supposed to. Best keep that to the experts. Leave me to demo.