Bridgeport Boss 3 Schmetics

I am helping a friend update the controller on a Bridgeport Boss 3 CNC
mill. The machine is hardly used, the ways and ball screws are like
new. We just want to update the controller. Does anyone have or know
where to get wiring diagrams for the controller box.

I would like to keep the aux functions like spindle control, coolant,
oilng ect. I will remove the motion controls and replace them with
modern logic.

Thanks;

Ken