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does anyone know of any 12V sources that only put out voltage when the ignition is on

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Old 02-29-2004, 07:27 PM
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Default does anyone know of any 12V sources that only put out voltage when the ignition is on
Much like a 12V switch wire for the stereo.
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Old 02-29-2004, 07:37 PM
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ya the homelink fuse its like....#16 ???
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Old 02-29-2004, 07:37 PM
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these should be: sunroof, lighter (i think), and towing package lines.
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Old 02-29-2004, 07:38 PM
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Default Here's one way...
From a Valentine 1 hardwire installation... <a href="https://forums.audiworld.com/a4gen2/msgs/58774.phtml">Old Post</a>

I think you can also tap directly into the power block located behind the driver's side knee bolster. There's a write-up for that somewhere too...

How's the Projekt going?
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Old 02-29-2004, 07:44 PM
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all cig lighters are constant 12V, i know cause i've drained my battery before
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Old 02-29-2004, 07:46 PM
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use Fuse 16, ive got my radar hard wired to it and my amp for remote turno on, lol
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Old 02-29-2004, 07:47 PM
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Default Heres another way......trial and error, touch some fuses
with the car off, if you find one that isnt life, keep it on there and turn the car on. POOF!
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Old 02-29-2004, 07:54 PM
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Default well, things are ok. I've run into a few problems. This being one of them.
Since I don't have a headunit anymore I don't have a signal to reamote turn on the amp. Well, I figured that was an easy one. I'll just use the 12 Switch wire for the stereo...for some reason when I hook it up to the the remote wire for the amp it drops to 1 volt. But when I hook it up to constant it works fine.
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Old 02-29-2004, 07:57 PM
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ignition wire you meant? that's the wire I was talkign about.
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Old 02-29-2004, 08:01 PM
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hmm well ive got my amp hooked up to Fuse 16 and it comes on every time i turnt he car on
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