[rchippie]

It does'nt really matter. Just make sure the middle motor wire from the speedo goes to the middle wire of the motor. If you hook it up and the vechile goes backward simply switch to two outer wires. If you look at the battery wires from the speedo they are marked positive (red) & negitive (black). So the two outer motor wires from the speedo are the same, what i do to mine is put a small piece of red & black heat shrink on the motor wires from the speedo to identify them as such.