Look for a Blue and an Orange wire spade end that attached to your controller and reverse them.
If you took out your F&R switch you can just reverse the wires on it also, leaving the center wire alone.
If you took off the wires on your motor F1 and F2, reverse them and you will correct the F&R issue.
You must have done one of the three above for this to happen... your choice as to how you want to correct it... just make sure you do only one
We assume that you have the right Main (+) and the right Main (-) cables on their respective battery terminals as well!!!