Have a new Wii or Wii Mini and can't wait to play? Connecting the Wii to your TV is a quick process and you should be able to play in minutes. See Step 1 to get started.
Steps

Step 1. Check what kind of connectors your TV supports
Almost all TVs support RCA (three-prong) connectors. They are typically red, white and yellow. Newer TVs may also support component (5-pin) connectors. They are colored red, white, yellow, blue and green.

Step 2. Check which cable your Wii has
Wii come with an RCA cable. If your TV supports it, the component cable provides a clearer picture and allows you to enjoy a wide screen.

Step 3. Connect Wii to TV
Connect the video cable to the back of the Wii, plug the matching pins into the matching colored jacks on your TV. Pay attention to which input you are connecting.

Step 4. Connect the Touch Panel
Connect the touchpad cable to the back of the Wii. Place the touchpad above or below the TV, preferably in the center. The touchpad allows the Wii to detect the Wii Remote when pointed at the screen.

Step 5. Connect the Wii power cable
The cable plugs into the back of the Wii and into any power outlet.

Step 6. Turn on Wii and TV
On the TV, turn on the input channel where you connected the Wii cable. You should see the Wii boot up on the screen. If you don't see it, check if you have connected the cables correctly.

Step 7. Adjust the display settings
This step is for those users who have used component cables. Use your Wii Remote to open the Wii Menu. Select Wii Settings to open a list of Settings. Select Screen, then select TV Resolution. Select EDTV or HDTV (480p), then click Confirm.
If you have a widescreen TV, choose Widescreen Settings from the Screen menu. Select Widescreen (16: 9), then press Confirm

Step 8. Connect your Wii to the Internet
To get the most out of your Wii, you will need to connect it to the internet. This will allow you to download games from the eShop, watch movies on Netflix and Hulu (by subscription), and play online games.