Chris NottAH Fabrications
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  1. #1
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    Headunit wiring harness

    i need to find the correct wiring harness for my car. i am replacing my headunit with an aftermarket one and i have a 2003 A4 with a bose system and no navigation. The one i purchased isnt correct and the pins do not line up so i was recieving no power to my aftermarket unit. could someone tell me which and where to buy the CORRECT one? Thanks in advance

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  3. #2
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    The standard power harness will work with any aftermarket HU, all that is missing is the ignition on feed to turn the HU on/off with the keys. As there is no ignition on feed on the Audi harness you either have to wire one in from the skinny red wire under the steering column, or wire the perm live on the harness to the ignition on on the new HU and turn the HU on/off manually.
    The harness you need is actually the adapter to allow you to plug into the Bose amp, which is PC9-410 if the new HU has font & rear RCA's or PC9-408 if you only have speaker outputs.
    You'll also need the antenna amp adapter and fascia plate:
    http://www.caraudiodirect.co.uk/aeri...tor-p-211.html
    http://www.caraudiodirect.co.uk/audi...tor-p-662.html

 

 

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