Step 1: Press the Power button on the Wii console to turn it on.

Step 2: Open the SD Card Slot cover on the front of the Wii console. If you are using a Wii mini, the sync button is located left hand side next to the battery compartment. The sync button is a darker shade of red than the console.

Step 3: Remove the battery cover on the back of the Wii Remote to be synced.
Some models of the Wii Remote include a hole in the battery cover and a tool on the wrist strap to push the SYNC Button with. With this model, the battery cover does not need to be removed to access the SYNC button.

Step 4: Press and release the SYNC button just below the batteries on the Wii Remote; the Player LED on the front of the Wii Remote will blink. While the lights are still blinking, quickly press and release the red SYNC button on the Wii console.

Step 5: When the Player LED blinking stops and stays lit, the syncing is complete. The LED that is illuminated indicates the player number (1 through 4).

Step 6: This sync procedure must be followed for each additional Wii Remote added to the system.