Need Help! help please with spindle wiring

Hi all i have just purchased a second hand roland pnc 2700. now it has been modified and all the controls for it have been upgraded so it will run mac 3. the problem i have is that there are no controls for the spindle and me being new to this doesnt have a clue how to wire it or what i need to do this. all i know about the spindle its self is that it has 4 wires to it, red yellow blue and black, now i was under the impression that this meant it was 3phase but i am not convinced. please please can someone help me to wire this up or give me some advice on what to do next and where i might find more information.

thanks Anthony