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  1. Aftermarket Radio No Sound

    4G (2011+) Optima
    I'm going crazy. I have a 2013 Optima EX with the darn Infinity sound. I'm trying to put in my Pioneer AVH-1400NEX. I'm using the Metra Interface AX-HYKIA-SPDIF and the Metra AX-HYKIA-SPDIF AMPLIFIER RETENTION INTERFACE. Everything is wired correctly, including the blue/white amp on wires, but I...
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