RCA-WH.Y2/1 is a part of Carmedia, a system created to enable in-car entertainment and communication. It consists of two Reversed Pole/Sleeve Coaxial connectors, often referred to as RCA connectors, which are meant to provide a connection between an audio system and an audio device, such as a radio, cassette player, amplifier, or speaker. The Y2 part of the name refers to the yellow and white colors of the two plugs in the set. The second number indicates the diameter of the connector, in this case 1/8?. This part of the Carmedia system is typically used to provide a stereo audio connection, usually to a sound system or audio device that requires left and right channels.