Step 2: Dismantling the Controller
There are seven screws holding the rear shell onto the controller. Three on each side, and one underneath the bar-code sticker under the battery pack. Opening this controller will void your controller's warranty - as if it meant anything. Unscrew the seven screws and place them where you won't lose them. If you wish, stick the screws to a strip of duct tape. Just pull the rear shell from the front and it should pop off. Lift out the two rumble motors and the controller mainboard. There is no reason to remove the buttons or bumper pads, all we need is those LEDs.
Remove the Motors
The rumble motors will just get in the way of this install, and are not necessary for the controller to function. There are two wires (red=positive, black=negative) connected to a clip which is inserted into a holder. Grip the insert on the sides and wiggle it out. Be gentle, these wires are prone to breaking and you should only pull on the insert itself. If you break a wire, just solder it back together and wrap your splice in electrical tape.