Stepper Cable JST-PH6 to PC2510
 | Stepper Motor side | Controller side |  |
This is a stepper motor cable. To connect our Nema17 40mm stepper motors the 2 wires in the middle(B/C) may required to be swapped, if motor is not moving as intended (Vibrating instead of moving for instance). If it moving in correct direction, switch the outer and following cable (for instance A/B in above wiring). Is not a big deal wiring DC steppers incorrectly, if you do it would either move incorrect direction or vibrate without moving. If see this happen, please follow below guide to re-pin the stepper motor.
Common Troubleshooting Guides
Stepper Motor is just vibrates but does not move.
If you have multi meter you able to find continuity of two pairs.
Motor moving incorrect direction.
Motor is moving incorrect direction and you not able to re-compile firmware or update klipper configuration easily you can swap the wiring like below.
Animated GIF Source: https://kevinakasam.com/last-step-singlez/