Wiring through firewall
Thread Starter
TECH Resident
Joined: Oct 2008
Posts: 966
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From: Redondo Beach, CA
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
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
Thread Starter
TECH Resident
Joined: Oct 2008
Posts: 966
Likes: 0
From: Redondo Beach, CA
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
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..
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.
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.
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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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