Couple things. Im sure you already know this but your controller MUST be a wireless old style controller, AND this mod does not work with fresh batteries. Do you have any experience soldering? If not then this is NOT the mod to start with. You have to solder a hair sized wire onto a led that 3/10ths of a mm wide. As Nemesis said, flux, small tip, and dont touch the led, even for a second. It melts the led almost instantly. Tin your wire first, put the wire against the joint on left side of led, then apply the soldering iron to the wire to heat the existing solder on the LED, remove heat from wire and the wire should stay. FYI: Only works if your controller is linked to player 1. OH and best of luck!