RCA connectors, also called Phono connectors, the come in different colors, depending on the use, they can be found in a male or female version:


When used for audio distribution the color is:

Red is for right audio channel

White is for Left audio channel


When used for video

Yellow is for composite video

Orange for S/PDIF digital audio


When you look at the connector, it has a ground shield, and a pin for signal, it is illustrated in the picture below