Plug and play!
This is updated wiring kit for the LowRider CNC, and the Mostly Printed CNC. No need to crimp your own. 6 wires to include endstops as well as the steppers.
Primo Needs 5 wires
LR3 Needs 3 wires.
Individual- 1.5M (~5'), 22AWG.
You should tape or otherwise secure the connections to relieve any stress of repetitive motion. Matching clip side to clip side should make your steppers move in the correct directions, if not flip one of the stepper plugs to reverse its direction.
More info, Individual (Dual Endstops).