Hello Tweakie, I don't know if they are unipolar or not the motors have 8 wires coming from them 1A 2a gnd gnd gnd gnd 2a 1A
Yes the BOB is marked clearly where these go to, two of the grounds are soiderd together on each side. there are 6 terminals for the motor hook up. see j peg above.
The steppers motors came with the kit BOB, the 25 pin cable came with the kit to. Yes I have checked the wiring twice and believe it to be correct but I will recheck it Saturday and verify it..Ward