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Wiring through firewall

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Old 12-29-2008, 04:06 PM
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Default Wiring through firewall

So yesterday i started wiring for my amp/sub setup in the trunk. Nothing fancy or too big, just a single 12'inch and a 600Watt monochannel amp with a 2-farad capacitor. I found a hole that was drilled in the firewall by the previous owner for an old alarm that is about 1/2 inch in diameter, would it be a problem sticking the 5 gauge wire for the amplifier through there, directly connect to the battery (with fuse) and be good to go? I wired it with zip ties through that hole, across the aftermarket strut brace and to the + terminal
Old 12-29-2008, 04:28 PM
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yea should be fine 5 gauge for a 600 watt amp damn i never used that big of one for that size amp i always used it on 1000watts and up, but it wont be starving for power thats for sure
Old 12-29-2008, 04:39 PM
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Originally Posted by aksz71
yea should be fine 5 gauge for a 600 watt amp damn i never used that big of one for that size amp i always used it on 1000watts and up, but it wont be starving for power thats for sure
I had it laying around and figured better safe then sorry, i always use 5 gauge wire on my setups. I'm just worried it might get too hot for the wire where i mounted it... but if you guys think its ok
Old 12-29-2008, 04:49 PM
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the hole were all ur wires go through is were i always put the amp wire for mine on the previous cars i just popped out the little rubber piece and let it hang and the amp wire(power wire) layed right up against the firewall and on the other wires never had a problem except for burning up the alternator lol and my old system was continuous 800watts with a mtx 942 and mtx 7500 series 10's with a 1 faret cap..
Old 12-30-2008, 03:10 PM
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Originally Posted by aksz71
the hole were all ur wires go through is were i always put the amp wire for mine on the previous cars i just popped out the little rubber piece and let it hang and the amp wire(power wire) layed right up against the firewall and on the other wires never had a problem except for burning up the alternator lol and my old system was continuous 800watts with a mtx 942 and mtx 7500 series 10's with a 1 faret cap..

that's what I did too, now got two 4ga. power wires going through that factory hole with all the other factory wires no problem.
Old 12-31-2008, 12:14 PM
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Lol I have over kill 0 gauge for power and ground amp is a 1500 rms
Old 12-31-2008, 11:24 PM
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Originally Posted by hartman
Lol I have over kill 0 gauge for power and ground amp is a 1500 rms

Hey that's not overkill man, I read that anything over 800 rms you should have 0 gauge.

I got 1600 rms, I already had one 4-ga wire, someone told me to just run another 4-ga wire, he said that it's pretty darn close to a 0 gauge wire, so I said fuggit and that's what I did.
Old 01-01-2009, 09:13 AM
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I would just make sure on that half inch hole that there is some kind of gromet around the wire. You don't want the power wire chafing though and cause a short to ground with a big power wire like that. I found that you can get gromets and rubber insulators at napa and other autoparts stores.




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