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A3 speakerwire color question

Discussion in 'In-Car Entertainment' started by H665, Jul 3, 2011.

  1. H665
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    H665 New Member

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    [Jul 3, 2011]
    I'm replacing the stock speakers of my A3 SB. I have grey and black wires in the front and and grey and blue in the rear doors. Can anyone tell me which is + and which is - ? Saves me going through a trial and error. Thx
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  3. AndyMac
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    AndyMac Moderator Staff Member Moderator

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    [Jul 3, 2011]
    Can't really go on the colours as Audi changes them and if you have Bose then they are sometimes wired out of phase with each other for god only knows what reason. Easiest way to check is connect a AA battery across the terminals of the stock speakers or the cables and see if the speaker cone moves out or in. If it moves out then you have the +ve battery terminal on the +ve wire. If it moves in then you have the +ve terminal of the battery on the -ve of the speaker.
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  4. H665
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    H665 New Member

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    [Jul 3, 2011]
    I will try that then. Thx again Andy!
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