This is the Wii track ball You will need a few items to do this mod a track ball assembly, an 11 pin .5 mm FPC clasp some wire soldering gun and solder. We will install a track ball on a wii mote for enhanced gamming..
here is the pin out for the track ball
Step one lightly sand down the traces so you are able to solder to them.. Here is an ilistration of the wiring lay out of the Wii-Mote..
Step two solder wires to the point shown in the picture. notice I soldered 3 grounds to one spot this will become aparent later..
Here is the corosponding points for soldering the trackball to the wii-mote
This is what your wii-mote track ball should look like when finished..
