How to connect an unknown brushless motor?
Brushless motor. Three wires come out. Designations and nameplate no.
I do not know. Send more photos, nothing is especially clear on yours. This red body from this engine? Were there capacitors? If there were, then there is a phase on one wire, zero on the other, and a capacitor between the phase and the third wire. So far, that's all I can assume. I also recommend measuring the resistance of the windings before you send more photos and any information.