existing 12V source in the trunk?
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Joined: Apr 2005
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existing 12V source in the trunk?
anyone know if there is a 12V source in the trunk I can easily tap into? (I want to wire up a relay to get more umph out of the stock alarm horn. cause all that horn needs is a solid 12V to really fire. and the voltage the alarm sends to it, is such a fast burst of voltage, it hardly even registers on a multimeter. so the current wire running to the horn will be the trigger for the relay. from my tests a while back, that should work very well.)
Thread Starter
AudiWorld Member
Joined: Apr 2005
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yeah I have a cd changer and nav system. but ...
the changer plug is connected to my phatnoise unit. the other side has the bose subwoofer thing or whatever, but i need a wire thats hot even with the ignition off.
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