Here's a diagram to print an use when wiring your motors. Unipolar and Bipolar parallel are also in my gallery. Just change the colors to match the cable you use.
Bipolar series diagram;
Also, FYI;
Bipolar Parallel diagram Unipolar diagram
Pre wired cables, PMax motor connectors, wire, etc are are also available online at
Firey Electronics
Best of luck to you!
J