I purchased some Lin Engineering 4218L-01-10 for use with the Pololu A4983 stepper controller board and after much frustration, myself and a few other IRC Channel purveyors discovered the color coding from the
Lin Engineering FAQ is incorrect, at least for this particular model.
The correct color coding is...
Red = B2
Blue = A2
Green = A1
Black = B1
Hope this helps alleviate some unnecessary troubleshooting down the road!
Special thanks to FrankNeon, peer, and Smoreplay