Yuenhoang Brushless Motor Underwater Thruster 12V-24V CW CCW 4-Blade Nylon Propeller for DIY Underwater Robot RC Bait Tug Boats (1pc CW)

First off the item arrived a month early (only reason for 2 stars) beyond that I’m disappointed. There are 3 wires (red blue and black), with no instructions. I played around with the motor on some ac adapters I have. With a 12v dc 3amp I could only get a twitch, no rotation. However on a 16Vac I could got the motors working with black into on the pos and switching out between the red and blue. Unfortunately it was inconsistent, working at random intervals trying the blue and red on the neutral port of the adapter, (I have to assume that’s because I was using alternating current). I don’t know enough about ac v dc, need to do more research, but it’s concerning I had nothing but a twitch on the 12v dc current. I’ll try applying a 16v Dc current or greater up to 24dvc and alter my review If I can get it to go on DC. Lastly, I bought this item because I needed a submersible direct current motor so that I could regulate rpms with a change in voltage (not possible or extremely limited on ac motor) I’ll try it on a 24v dc adapter but I still can’t figure what the 3 wires are if it’s a DC motor. I was testing outside of water. Any assistance/advice/feedback would be greatly appreciated.

Items arrived as non-working condition