MGM Wiring

I recently bought a MGM 22418 to use with a Neu 1511 1Y motor. The MGM has two sets of three yellow wires to connect to the motor. The Neu has a blue, red and yellow wire. I know that one of the wires is a sensor wire and that the other two are reversible to make the motor run in different directions. How do I tell which wire on the speed controlled and which wire on the motor is th sensor wire?

Thanx in advance for your help.

[nl12]

all three wires are interchangable. You can switch any 2 to change directions of the motor

Thanx :)