Brushless motors run on AC not DC so there is no +,-. The three motor wires can connect to the three esc wires in any order. After you power-up and notice the motor running backwards you can simply swap two of the three connections to reverse the rotation. If the motor rotates correctly then leave the connections as-is.
Take a look through this when you can:
http://www.rcuniverse.com/forum/elec...ic-flight.html