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audio upgrade

  1. XC40 (CMA 2019- )
    Hello Guys, i have a xc40 r design. I recently upgraded my oem sound system by installing an amplifier after the OEM module. I only used 4 of the 6 output channels from the original amplifier, leaving the other wires cut. The dealer kindly gave me the oem amplifier wiring diagram (do you need it...
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