Can I Connect the Wii with an RF Switch?
Wii & Wii mini
Unlike our past systems, an RF Switch is not available for the Wii console. The use of RF Switches for a system connection has steadily declined over recent years, and there simply isn't enough demand to offset the development costs that would have resulted from making this accessory available.
If you do not have another option available for connecting your system besides a coaxial (cable-ready) input on the TV, you will need to purchase a standard RF Modulator at a local electronics store. An RF Modulator should be designed to fit one end onto the coaxial input and the other end able to have the yellow, red, and white connectors inserted.