Keeping Factory System, But add Subs

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Djtre

Member - Posts: 5

Joined: July 26, 2004

Location: United States

Posted: July 26, 2004 at 9:14 AM / IP Logged

I am adding subs to my 300m "99". I will tap into the rear speakers for amp preouts, but I need to have a remote turn on for the amp......Which wire on the factory amp is the remote turn on wire? Or which one is it on the head unit?

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: July 26, 2004 at 9:49 AM / IP Logged

Simply find any circuit in your car that switches on with the key and use that. A voltmeter at the fuse panel and an assistant to turn the key is all you need...

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Djtre

Member - Posts: 5

Joined: July 26, 2004

Location: United States

Posted: July 26, 2004 at 10:16 AM / IP Logged

Yeah I figured that, But the factory amp is already in the trunk (Meaning less wire to run) if I could find which wire is the remote turn on.......Or I would like to at least keep it in the stereo compartment.....Thanks for any and all help!!!

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kgerry

Platinum - Posts: 3,455

This member consistently provides reliable information

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: July 26, 2004 at 12:04 PM / IP Logged

why not just climb into the trunk with a DMM and meter the plug? have someone up front turn the HU on & off and look for the wire with 12v radio on & 0v radio off........

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

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nguyenk

Member - Posts: 31

Joined: June 25, 2004

Posted: July 26, 2004 at 1:56 PM / IP Logged

Get an amp that can turn on by detecting a high level input signal. The JBL600.1 does, I got one.

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fuseblower

Silver - Posts: 403

Joined: June 25, 2003

Location: United States

Posted: July 26, 2004 at 2:09 PM / IP Logged

They may have used the same color for the amp as the antena. Try the white wire. If not, you can always use a voltmeter. Here is another method you can try. With your wires ran disconnect the factory amp and push the amps remote on wire into each of the connectors hole until the amp comes on. Since the amp uses very little current to turn on this should work but is very time consuming.

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Djtre

Member - Posts: 5

Joined: July 26, 2004

Location: United States

Posted: July 26, 2004 at 4:47 PM / IP Logged

I'll try those things tonight...Thanks again for the help

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Keeping Factory System, But add Subs

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