Things You'll Need
Instructions
Flip the controller face down and use a Phillips screwdriver to remove the five screws on the back of the controller. Place the screws aside where they won't get lost.
Locate the clasp at the bottom of the controller. Press the center of the clasp down and pull the face of the controller away from the back. The controller will separate down the seam. Set the backside of the controller aside and set the faceplate down so the electrical components face you.
Unclip the battery from the center of the controller and remove it to reveal the motherboard. Insert the wires from the "Intensifire" into the "Player 3" and "Player 4" slots at the top right corner of the motherboard. Pull back the plastic strip covering the "Intensifire Chip." Place the chip over the "IC Chip" in the center of the motherboard.
Place the battery over the "Intensafire Chip" and clip the battery into place. Bring the two halves of the controller back together and secure them by inserting the screws and tightening them with a Philips head screwdriver.