Stepper Motor Wire Color Codes by Manufacturer

Anaheim Automation

4 wire
style 1

 Black A
Orange A\
Red B
Yellow B\
     

4 wire
style 2

 Black A
Green A\
Red B
White B\
     

6 wire

 Red A
Red/White A\
Black Common A,A\
Green B
Green/White B\
White Common B, B\
     
8 wire Black A
White/Black A
Orange A\
White/Orange A\
Red B
White/Red B
Yellow B\
White/Yellow B\
Information from Anaheim Automation Website, 5/30/2007
 
Applied Motion Products (AMP)

4 wire

 Red A+
Blue A-
Yellow B+
White B-
     

6 wire

 Green A+
Green/White A-
White Common A+,A-
Red B+
Red/White B-
Black Common B+, B-
     
8 wire Black A
White/Black A
Orange A\
White/Orange A\
Red B
White/Red B
Yellow B\
White/Yellow B\
Information from Applied Motion Products website on 5/30/2007