2002 Ford Focus factory radio remote amp turn on wire?

O.K, I know that there is not a factory amp in the car other than the one in the head unit. I am looking at putting in a "stealth" system that will utilize the factory radio/CD unit in the dash, with a large dose of signal processing from Audio Control. I already have the line level signal tapped off of the now defunct speaker wires. Q-form kick panels with Boston Acoustic separates, 12" (Boston) subs, with 2 Soundstream amps under the seats in fan cooled stainless steel boxes. Here is the the sticking point - which wire should I use as the remote turn on? There is no power antennae wire, no remote wire that I have found or seen on any diagram. I hate to have to tap into an unrelated circuit to use as a turn on switch. Any ideas? Has anyone run into this before? When I called an installation shop (higher end) they said "bring it in". No s**t, I'm sure they can do it and charge me, but this is all being done by myself (with your help) in my garage. Thanks.

2009-06-01T13:39:42Z

KaeZoo- Thanks, I had such tunnel vision on the head unit I missed the forest for the trees.

KaeZoo2009-06-01T13:35:57Z

Favorite Answer

Doesn't your AudioControl processor include a signal-sensing auto turn-on circuit and a +12VDC turn-on output? I thought this was a standard feature on all their OEM integration pieces.

Without that, your best option might be to tap into the accessory power source at the head unit. That would turn your system on and off with the key switch. It's not ideal, but it works. Otherwise you'd need a signal-sensing turn-on module: much like the one that should be built into your processor.

20

scott p2009-06-01T20:43:49Z

Radio 12v orange/black (thick)
Radio Ground blk/yel & blk/grn
Radio Ignition yellow/green
http://www.the12volt.com/installbay/vehiclewiring/2/yeard/Ford.html

So you're going to have to tap into the yellow/green wire.

You should not have any problems, as long as you do try to use it on more then 3 amps. Any more then 3 and you will need to hook up a new relay.

10

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