Got the encoders today.
5 wires each
A & B
Vcc / System ground
Shield ground
Color code in Mandarin Chinese.
Actually not a problem.
http://mandarin.about.com/od/vocabulary/a/colors.htm
Black = system ground
Red = Vcc
Shield ground is black higher gauge or bare
White, Yellow, Green are A & B
Will power them up tomorrow.
These are likely too big for AndyMark gear boxes without shaft couplers and spacers.