Woaaahhhh.
so have you tried another motor and the esc is smoking? If so then you have blown the esc up.
You may well be able to get it rapaired if you send it back (for a charge).
Your question really should have been answered properly in the first place, well, more clearly.
Next time it happens if your motor is installed in the car you need to rotate the end bell 180%! a full half turn,. The endbell is the plastic part at the end of the metal can. There are two screws that attach this to the can. Or you can switch the wires which has exactly the same effect. (its just remembering that its the opposite way next time you install the motor) All you are doing is reversing the polarity on the motor because that determines which direction the motor turns.
Good luck with your speedo. Hope it does not happen to you again.
