multi acc turn on w/ diode

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carstereoman

Member - Posts: 48

Joined: May 02, 2002

Location: United States

Posted: August 30, 2007 at 7:19 PM / IP Logged

I know how to wire up this relay but I took a class at MERA and the rockford guys said they always use a diode so that it doesn't backfeed. Anyone know where to put it and which way it goes?

30 - remote to amps or accessories

85 - ground

86 - turn on lead from head unit

87 - 12 v +

87a- N/A

Thanks!!!

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i am an idiot

Platinum - Posts: 13,670

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 31, 2007 at 2:23 PM / IP Logged

Across 85 and 86 The band of the diode on power.

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carstereoman

Member - Posts: 48

Joined: May 02, 2002

Location: United States

Posted: September 04, 2007 at 6:20 PM / IP Logged

How does this work? I called RF (Know a guy that works there) and he says Put the diode on the output (30 pin on relay) w/ the black portion facing the input and the white line facing the output.

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i am an idiot

Platinum - Posts: 13,670

Joined: September 21, 2006

Location: Louisiana, United States

Posted: September 09, 2007 at 3:46 PM / IP Logged

I have no idea what they are trying to achieve by putting it there. The purpose of across 85 and 86 is to eliminate the pop in the audio system everytime the relay is turned off. A diode has a current rating, you need to make sure it will handle the current of your devices if you put it where the Rockford guy tells you.

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multi acc turn on w/ diode

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