Basic Compatibility
If your TV supports component video connectors, it can support the Wii. The component video connectors that come with the Wii are three cables colored red, yellow and white. These plug into the TV's inputs, which should also be color-coded in these three colors. This is the basic way of playing the Nintendo Wii with any TV set, other than high-definition television (HDTV).
Connection
Find the inputs on your TV. Depending on your make and model, inputs could be located on the side, back, front or all three. Match the red, yellow and white inputs to the three connector cables. Plug each cable into the input of the same color. Then turn on your TV, and set it to the proper input. You can usually do this by pressing the "Input" button on the TV remote control. Most TVs have several inputs, so you may have to press "Input" repeatedly to find the right one for your Nintendo Wii. When you find the right input, turn on the Wii. Always turn on your TV before turning on the Wii.
High-Definiton Compatibility
If you want to play your Wii games in high definition, you need a few key products. The most obvious is an HDTV. You will also need to purchase a Wii component video cable that will hook up to one of your TV's high-definition inputs. A high-definition video cable has five connectors: three for video and two for left and right stereo audio.
High-Definition Connection
To hook up your Wii to an HDTV, follow the same basic procedure as for hooking up a Wii to a standard TV. In addition, you must find one of your TV's high-definition inputs, which again could be anywhere on the set. Link the high-definition input to the Wii using the Wii component video cable. Plug the component cables into the TV and turn the TV to the proper input. Then turn on your Wii and adjust your Wii system settings from "Standard TV" to "HDTV."
Safety
Playing video games comes with safety hazards. According to Nintendo, about 1 in 4,000 people have seizures or blackouts set off by flashing lights or light patterns when watching TV. Nintendo recommends that you stop playing video games if you have any of the following symptoms: altered vision, eye or muscle twitching, involuntary movements, loss of awareness, disorientation or convulsions.