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Aftermarket head unit fitting problem

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by duvetdo, Jan 17, 2010.

  1. duvetdo

    duvetdo New Member

    Dec 24, 2009
    Likes Received:
    Hi guys.

    First post, so please treat me gently!

    I think I've bought all the right kit to fit my Alpine CDA-9855 into my A4; the facia panel, PC5-90 aerial adaptor and PC9-408 harness (I have the fully-amped Bose).

    I whip out the old Concert II, clip all the connectors together and..... nothing. :mad:

    Your help will be much appreciated!


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