I believe, from what i've read and what i understand of winch motors...
Connect F2 to A and to Earth. Connect +12v to F1 for one direction
Connect F1 to A and to Earth. Connect +12v to F2 for the other direction
(NOTE: do not think you can just connect the other F terminal to earth and skip A, this could end badly, you must connect the other F terminal to A and then to earth... I can explain why if you would like)