Then, you need to get the metal casing off of the wires. The case has two little metal arms where it joins to the cable, they are kind of "strangling" the wire. Use the screw driver to bend these out flat away from the wire. Then on either side there is a little flap over the side with a hole in it that holds the top and bottom together. Stick the screwdriver under the flaps and pry them back carefully. Now the top and bottom of the case should separate.