Howdy, I'm Gene and teach middle school shop. Right now I am trying to get my CNC machine built for use in class and made the mistake of buying one off a popular online shopping site. [Note: Next time I buy American.] Right now I have a 3020T 4 axis CNC milling machine with a Sunwin controller replacing the original controller that was in pieces due to being air dropped without a parachute out the back of a C-130. At least that is what it looked like. Anyway, the spindle connects to the old controller with a three wire cable. The Sunwin controller uses a four wire connector. The spindle is water cooled and I believe, 1500 watts. In wiring this spindle to the controller, does anyone have any ideas that would be helpful short of starting over with a whole new machine? Thanks in advance, Gene