Things You'll Need
Instructions
Remove the battery pack from the back of the controller with the Phillips screwdriver to reduce your risk of shock or electrocution. Keep in mind that even with the batteries removed there is still a chance of shock if there is residual electricity remaining in the controller.
Place the end of a flat-head screwdriver in the seam of the controller. Work the screwdriver around the controller until the two sides separate. Set the face plate (the side with the buttons) aside and keep the back side faced up so the electrical components face you.
Solder the red wire of the momentary switch to the middle pin trigger on the controller̵7;s mother board. Solder the black wire to the LED ground. The middle pin trigger is the center of three places on the mother board marked "PIN TRGR." The LED ground is marked "LED GRND."
Drill a hole through the bottom of the face plate and thread the momentary switch through the hole. Unite the two sides of the controller
Plug the battery pack into the back of the controller. All the buttons work the same as before on the controller. Press the momentary switch for rapid fire.