Making the cut

Warning: Do not perform this modification while the cable is connected to power. For your safety, the cable needs to be unplugged.

For the next step, I took one of the two sides of the cord (it doesn't matter which side) and cut it in the middle of the separated section. With a pair of wire strippers I then exposed 1/4-inch of copper from each side of the cut cord (only one side show here for the sake of comparison).