Instructions
Insert the included batteries into the battery compartment on the back of the guitar. Press the "On" switch on the back of the instrument.
Connect the sync dongle to one of the USB ports on the back of the Wii. Press the "guitar icon" on the sync dongle until it flashes blue.
Now press and hold the "sync" button on the dongle. While still holding the sync button on the dongle, press the sync button on the guitar. When the lights on the guitar have stabilized, you have successfully synced the guitar to your Wii.