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  1. maxniomi

    maxniomi New Member

    Hi guys
    I've just purchased an audie a4 1.9 tdi sport avant and want to change the head unit to my sony bt unit and have bought the pc9-404 and the 410 cable came with it from halfords as I have rear amp but when I removed the concert stereo I noticed two lots of brown and black connectors on the loom which looked like a loop if that makes sense but unplugged the set from the back of the concert and plugged them into the pc9-404 and am getting no power to the sony head unit as I thought the pc9-404 should be plug and play but have notice a red wire (ignition) wire coming out of the new iso connector.

    Any ideas guys?

    Many thanks max

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