The RCA cable, which is used in virtually all audio installations, allow you to connect your portable CD or digital audio player to your portable speakers or AV receiver. Generally it refers to a cable with three color-coded plugs, which connect to three correspondingly-colored jacks. This cable includes conductors for each of the three video channels (Red, Green, Blue). The colors are usually red and white for right and left audio channels and yellow for composite video. The connectors are nickel plated or gold plated to provide smooth, corrosion-free connections. 3 RCA Component Video Cable is commonly used in home theater applications for connecting the analog output of DVD players and VCRs to the corresponding inputs on your TV.