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Thread: Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

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    Junior Member Turborusty's Avatar
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    Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

    As the title says, I'm installing a basic add-on amp/sub to a '13 Audi A4 with the B&O system. I'm having a hell of a time finding an ignition-switched lead in the rear of the car to trigger the amp turn-on.

    I previously did the same basic system in our own 2010 S5 and found a switched lead in the fuse panel on the rear passenger side. But on this A4, the entire fuse panel is hot/live all the time.

    Any help would be appreciated.

    Thank you!

    Turborusty

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    Senior Member Euphonic's Avatar
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    Re: Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

    There is a black wire in a harness behind the fuse box that is ignition.


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    Junior Member Turborusty's Avatar
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    Re: Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

    Is this the fuse box behind the passenger side rear panel in the trunk?

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    Senior Member Euphonic's Avatar
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    Re: Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

    No, it's the driver side front by the kick panel.

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    Junior Member Turborusty's Avatar
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    Re: Need help finding a switched 12v source for turn-on lead. 2013 Audi A4

    Ok thank you. Looks i'm running a wire up front. I appreciate your help!!

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