AH FabricationsChris Nott
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  1. #1
    k3v
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    Installing headunit.

    Im looking to install a pioneer head unit into my '04' a3.
    Can anyone help with what wiring harness I need and any other wiring adapters that are required.
    The car doesnt have bose, and all the speakers will be externally amped.
    I basicly need a harness to plug into the cars existing loom, however I keep reading how there is no ignition live behind the stereo, would this be what I would need?
    http://caraudiosecurity.com/shop/pro...s_id/8074.html
    Last edited by k3v; 26th February 2009 at 18:08.

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  3. #2
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    Yes that's what you can use, but you can wire in your own "ignition on" wire and save yourself 50, or just turn the new HU on/off manually.
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

  4. #3
    k3v
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    Wheres the best place take the switch live from then?

  5. #4
    k3v
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    Could I then just fit this

    http://caraudiosecurity.com/shop/pro...s_id/1569.html

    Then just tap into the ignition live for the stereo?

  6. #5
    k3v
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    Does anybody know what wire behind the stereo controls the dimming of the stereo?

  7. #6
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    If you look on the original Audi HU the schematic is on top, the dimming wire is the one that looks like a little sun, however it may again use the CANBUS for dimming.
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

  8. #7
    k3v
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    Quote Originally Posted by AndyMac View Post
    If you look on the original Audi HU the schematic is on top, the dimming wire is the one that looks like a little sun, however it may again use the CANBUS for dimming.
    Thanks for that, however, I dont seem to have that 'sun' logo there.

    I think you may be right about the CANBUS, is there any way of it dimming other then getting an expensive adapter?

  9. #8
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    i have a spare wireing loom for a a3 /a4 the 1 that makes the rear speakers work ,i bought it cos i put a sony headunit in my a3 ,any good let me know

  10. #9
    k3v
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    Quote Originally Posted by t2myd View Post
    i have a spare wireing loom for a a3 /a4 the 1 that makes the rear speakers work ,i bought it cos i put a sony headunit in my a3 ,any good let me know
    Cheers but I dont need that, Im using an external amp to run speakers

  11. #10
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    If it's CANBUS controlled then an emulator is the only solution I'm afraid.
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

 

 

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