This step might vary depending on how the voltage regulator comes

Make sure to not cut the mini USB off of the voltage regulator

Cut the open wire side (the side that the red arrow points to)

Use wire cutters to cut the wire so that there is only about 3 inches left from the voltage controller (where the purple arrow is pointing)

The voltage regulator should look like the one in the second picture and the end of the wire will look like the third picture