Sony SupportCDX-GT929U

Article ID : 00400208 / Last Modified : 08/05/2026Print

What do the wires on the 16-pin wiring harness mean?


    Issue: You need to identify the function of each wire on a 16-pin wiring harness.
    Applies to: Sony in-car audio and video products using a 16-pin wiring harness
    Resolution: Use the wiring harness pinout table below to identify speaker, power, ground, and control wires during installation or troubleshooting.

    IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.

    The 16-pin wiring harness connects your Sony in-car product to your vehicle’s speakers, power supply, antenna, and other control systems.

    If you are installing, replacing, or troubleshooting a compatible Sony car audio or video product, the wire color and pin information below can help identify the purpose of each connection.

    Before you start:

    • Disconnect the vehicle battery before working with electrical wiring.
    • Incorrect wiring may damage the product or your vehicle’s electrical system.
    • Vehicle wire colors may differ from the Sony wiring harness colors shown below.
    • If additional installation procedures or technical information are needed, contact a qualified car stereo installer.

    About the wire groups

    • White, grey, green, and violet wires: Speaker connections
    • Red and yellow wires: Power connections
    • Black wire: Ground connection
    • Blue and blue/white wires: Antenna or amplifier control
    • Orange/white wire: Illumination/dimmer control

    16-pin wiring harness pinout

    Pin Number Wire Color Function
    1 White Left Front Positive (+)
    2 Green Left Rear Positive (+)
    3 Violet Right Rear Positive (+)
    4 Grey Right Front Positive (+)
    5 Blue/White Amplifier Remote
    6 Blue Antenna Remote
    7 Red Accessory +12 V
    8 Black Ground
    9 White/Black Left Front Negative (-)
    10 Green/Black Left Rear Negative (-)
    11 Violet/Black Right Rear Negative (-)
    12 Grey/Black Right Front Negative (-)
    13 Sky Blue Telephone Mute
    14 Orange/White Illumination
    15 Not used Not used
    16 Yellow Constant +12 V

    Important speaker wiring information:

    • Speaker wires with a black stripe are negative (-) connections.
    • Do not connect speaker wires directly to the vehicle chassis ground.
    • Ensure positive and negative speaker wires are connected correctly to avoid audio issues or speaker damage.

    Applicable products

    • In-Car Amplifiers
    • In-Car Changers
    • In-Car Receivers
    • In-Car Speakers
    • In-Car Video products

    Note: Wiring configuration and supported functions may vary depending on the product model and vehicle installation setup. Always refer to the supplied installation guide for your specific Sony product.