I hope this can help. At minimum, perhaps someone can tell me what I should connect to what. Or, if I'm missing something.
For ease, I've labeled the connectors on the trackball loom, as well as the connectors on the cabinet loom.
Please refer to them in suggesting what should connect to what.
That would be a great help.
Thanks,
Steve
Trackball underside:



Trackball wiring loom connectors:





Cabinet wiring loom connectors:









I hope these can help.
Thanks again for your help!!