The Nintendo Wii plays hundreds of multiplayer video games, and each player needs a Wii remote to get in on the action. New Wii console bundles only come with one Wii remote, so additional remotes must be purchased separately. Fresh out of the box, new Wii remotes need to be registered first before they will work with your console. There are two methods of registering your remotes: "standard mode", which permanently registers a remote to a console; and "one time mode", which lets you temporarily use a remote on a Wii console.
Turn on your Wii console by pressing the power button. Open the SD Card slot on the front of the Wii. You can find the flap covering the SD Card slot directly left of the disc slot if your Wii is standing upright.
Take off the battery cover on the back of the Wii remote you want to register. Press the red "sync" button next to the SD Card slot, then press the red "sync" button on the back of your Wii remote.
Watch the "Player" LED light on the front of the Wii remote until it stops blinking. Once the blinking has stopped, your Wii remote is now registered to your Wii.
Press the "Home" button on a Wii remote already registered to your Wii console. Go to the bottom of the screen and select "Wii Remote Settings".
Choose the "Reconnect" option, then hit the "1" and "2" buttons on the front of your unregistered Wii remote simultaneously.
Watch the "Player" LED light on the front of the Wii remote until it stops blinking. Once the blinking has stopped, your Wii remote is now temporarily registered to your Wii. This registration will expire the next time your Wii console is powered off.
The Wii remote that comes packaged in a new Wii console bundle should already be registered to that system. If for any reason it is not, the same procedure for registering additional Wii remotes via standard mode can be used.