Fit for C4 2005 + /VDO/ RD4. Fit for C5 2004 + /VDO/ RD4. Fit for C2 2005 + /VDO/ RD4. Fit for C6 2005 + /VDO/ RD4. Match your phone or pad to module. And choose AUX from your radio, then you can use your phone to play music through car speakers.
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