RCA Wiring Harness Wire and Connector Identification


Device LED wiring harness with callouts

Wire Number

Wire Function

1

Auxiliary in left: Provides a red and white RCA stereo line input for audio sources, such as a CD or MP3 player.

Auxiliary in right: Provides a red and white RCA stereo line input for audio sources, such as a CD or MP3 player.

2

Line out left: Provides a full-range output to an external amplifier, and is associated with the volume control.

Line out right: Provides a full-range output to an external amplifier, and is associated with the volume control.

NOTE: If you are connecting to an external amplifier, you should use a ground loop isolator to ensure a clear signal.

3

Subwoofer out: Provides a single mono output to a powered subwoofer or subwoofer amplifier.

NOTE: If you are connecting to an external amplifier, you should use a ground loop isolator to ensure a clear signal.
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November 2025