Instructions
Turn the power on the Wii Console off and back on using the ̶0;Power̶1; button. You may also need to unplug the console for a few seconds. Your screen should display safety warnings for the Wii when it powers back up.
Open the flap near the disc drive on your Wii console and hold down the ̶0;Sync̶1; button for at least 15 seconds.
Remove the battery cover on your Wii remote control and press the red button near the batteries. The blue lights on your Wii remote should begin blinking.
Press the ̶0;Sync̶1; button on your console again, without holding it down this time. The blue lights on the Wii remote should stop blinking, indicating the remote has successfully synced.
Repeat the steps above to sync any additional remotes, omitting the first step. There is no need to power off the console to sync additional remotes.