Review on Konmison Sfu1605 Travel Length Actuator by Rovy Oppeneer

Looks like a great quality device at a good price. It will be some time before I assemble my "jig" and see how it works. PT2: Red/green or yellow/blue cores for stators A/B are marked in the connection diagram. My block was with black instead of yellow - And yellow-blue shows very high resistance, so I find I can't just replace yellow with black. My DVM states that the winding pairs are black/green and red/blue. But what is A and what is B? And what polarity (and does it matter)? and/or how to find out for yourself. I'm new to this business and I don't want to blow up the machine.