how many wires come from the motor and what color are they?
i haven't actually wired one but have done some res. and auto wiring. it should have 3 or 4 (up,down,neutral, and maybe a ground). if its only got 2, then the motor direction is changed in the switch (that would cost more and i don't see the manufaturer doing that). let me know and i may can help or i'll look at mine when i can.