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Wiring relay to turn on amp and accessories

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Old 08-08-2005, 04:36 PM
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Wiring relay to turn on amp and accessories

After googling and looking through pages of threads on here, I'm a little confused as to how to hook up a relay to turn on my new amp and accessories (two fans, possibly a light or two). I know you shouldn't just use the remote turn on lead from the head unit to turn everything on, instead use a SPDT relay.

From what I read, terminal 85 should be grounded, 86 is connected to the remote turn on lead, 87 to a 12V source, and 30 to the amp and accessories. Is this correct?

I've seen a number of different opinions on where I need fuses. Do you guys have any recommendations? I would guess a fuse between the 12V source and relay, and a fuse between the relay and the amp, but I'm a noob to wiring so I am probably wrong.

Last question... what should I use for the 12V source? The amp will be in the trunk, so I suppose I could put the relay in the dash and use the cigarette lighter, but if anyone has any better ideas I'd appreciate it.

Thanks in advance.
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Old 08-08-2005, 05:20 PM
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No Your relay wiring exacmple is incorrect. This one was covered here:

http://forums.maxima.org/showthread.php?t=419792

Fuse: yes ....even a cheap lil something somethin..but yes, fuse close
close to "the source" of your power.Sure you could use the cigarette lighter, you could use the battery and run a wire back there.

I like to tap the battery. Read the post I linked you to.


fuseholder: http://www.partsexpress.com/pe/showd...number=070-675
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Old 08-08-2005, 09:08 PM
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87 to +
86 to ground
85 to your remote from radio
30 to your amps/accessories.

Steve, Im sure your link showed the same, but I was to lazy to look
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Old 08-09-2005, 02:53 AM
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Hmmm I think i botched that one pretty bad. So much for whats left of my memory. Follow Don's advice.
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Old 08-09-2005, 08:13 AM
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Thanks for the info guys, that straightens everything up for me.
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Old 08-09-2005, 09:03 AM
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Originally Posted by BBOYSTEVIE
Hmmm I think i botched that one pretty bad. So much for whats left of my memory. Follow Don's advice.
I just checked the link and I was about to say you had it right, then I saw the "edit: fixed" on the bottom. LoL
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