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Connecting remote turn-on to several amps


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nitrofalcon 
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Joined: December 02, 2005
Posted: December 02, 2005 at 4:31 PM / IP Logged  

Hi folks,

I am a new member here and would like to ask a question.  I am upgrading the stereo in my car from a single amp to three amps (front/rear/sub).  How do I connect the remote turn-on from the head unit to all three amps?  Do I just splice in three wires into the one output?  If so, where is the best  place and procedure to do it?  What gauge wire and other part do I need?  Will the signal be strong enough to turn on all three amps?

Thanks in advance

Ron

tcss 
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Posted: December 02, 2005 at 4:59 PM / IP Logged  
My usual rule of thumb is with three or more amps, use a relay.
There is no such thing as free installation!
JMaxx93 
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Posted: December 02, 2005 at 5:15 PM / IP Logged  
i agree it will work initially but you'll run the risk on frying your rem turn on output.  more importantl is your grounding and power lead installation.  make sure you carefully plan that too.
the12volt 
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Posted: December 02, 2005 at 5:24 PM / IP Logged  
nitrofalcon 
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Posted: December 02, 2005 at 5:26 PM / IP Logged  

tcss wrote:
My usual rule of thumb is with three or more amps, use a relay.

Thanks.  I've never done this.  Is there any instructions, parts list, or diagrams on how to do it?

Ron

nitrofalcon 
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Joined: December 02, 2005
Posted: December 02, 2005 at 5:29 PM / IP Logged  

JMaxx93 wrote:
i agree it will work initially but you'll run the risk on frying your rem turn on output.  more importantl is your grounding and power lead installation.  make sure you carefully plan that too.

Thanks.  I'm going to use 4 ga wire for power from the battery to the dist. box and from there 8 ga to each amp.  Ground is also 8 ga from each amp to a dist. box and then 10 ga to ground.

nitrofalcon 
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Joined: December 02, 2005
Posted: December 02, 2005 at 5:32 PM / IP Logged  
the12volt wrote:

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

Thanks a bunch!  I saw this diagram on the web site but didn't know if it was also applicable to my application.  Thought maybe it was for alarm systems only.  I guess it works the same!

Any fusing?  If so how much and how many?

Teamrf 
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Posted: December 02, 2005 at 5:34 PM / IP Logged  

Use a relay set it up like this....

30 - 12volts fused

85 - Remote Turn On

86 - Ground

87 - Amps turn on leads.

~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.
nitrofalcon 
Member - Posts: 14
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Posted: December 02, 2005 at 5:37 PM / IP Logged  
the12volt wrote:

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

Two more questions please...

Does the 12v line need to be direct from the battery or can I use the same line that feeds the constant-on 12 v to the tuner?

Also, do I need to step down the voltage going to the the amps since the remote turn on is ( I think) lower voltage?

nitrofalcon 
Member - Posts: 14
Member spacespace
Joined: December 02, 2005
Posted: December 02, 2005 at 5:38 PM / IP Logged  
Teamrf wrote:

Use a relay set it up like this....

30 - 12volts fused

85 - Remote Turn On

86 - Ground

87 - Amps turn on leads.

Thanks.

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