I used the code from this website to control a 3 wire servo. The todbot blog seems to have lot of projects. The wiring is done pretty much the same way as the WiiChuck before. The Servo pin is connected to D7.
Wii NunChuck
Red – 3.3V
White – Ground
Green – Analog In 4 (A4)
Yellow – Analog In 5 (A5)
Servo
Red – 5V
Black – Ground
White – Digital 7 (D7)
