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relay to turn on car stereo

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madrigal87 
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Posted: December 11, 2007 at 9:08 PM / IP Logged  

I heard that you can turn on you car stereo with you car alarm with a relay

Does any one know how?

the12volt 
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Posted: December 11, 2007 at 9:43 PM / IP Logged  

Replace the switch lead (green) shown below with a negative output from your alarm.

relay to turn on car stereo -- posted image.

https://www.the12volt.com/relays/page5.asp#lsp

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madrigal87 
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Posted: December 12, 2007 at 8:46 PM / IP Logged  

I Heard you can turn on your car stereo with your car alarm

What is that devices in the picture is it a lighter? where do a get 12 volt output or where do i connect it to?

relay to turn on car stereo -- posted image.

mobile1 
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Posted: December 14, 2007 at 9:20 PM / IP Logged  
The "lighter" is just a momentary switch. You wouldn't use this. You would hook the light green wire up to the aux output from your alarm.  The 12v+ output would be the wire you hook up to your accy wire from your radio.
sik_integra 
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Posted: January 24, 2008 at 4:48 AM / IP Logged  
Hey Im really keen to do this.. Ive made my head deck so it doesnt turn off wen i take the key out cuz its wired striaght to the 12volt but i want to make it so I can turn it off and on from the Alarm remote can someone please tell me how to? thanks.
hotwaterwizard 
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relay to turn on car stereo -- posted image.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
hotwaterwizard 
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relay to turn on car stereo -- posted image.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
hotwaterwizard 
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Posted: January 30, 2008 at 10:17 PM / IP Logged  
relay to turn on car stereo -- posted image.
John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
tedmond 
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Posted: February 01, 2008 at 7:01 AM / IP Logged  
you can do what hotwater showed you, or if your unit offers LATCHED output for the aux, you can wire that to a relay and use the relay to power your audio system, but it will strain your battery.

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