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Old 10-05-2012, 05:37 PM   #1
FrankWhizzite
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Default Help with wiring

Can anyone who has installed their own sound system please help me out with figuring out where to run the power cable from the battery to the amp? Specifically finding or making a hole in the firewall to get the wire through....
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Old 10-05-2012, 05:41 PM   #2
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Btw 2009 2.5i... Sorry forgot to add that
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Old 10-05-2012, 07:07 PM   #3
tru scoob
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making a hole in the firewall to get the wire through.

That's how you do it. find a spot with no obstructions, get a proper size hole saw or unabit and watch the metal fly
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Old 10-05-2012, 08:08 PM   #4
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Old 10-05-2012, 08:29 PM   #5
FrankWhizzite
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hmmm thats the only way huh? i was a little skeptical about this but i gues it is what it is!
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Old 10-05-2012, 08:31 PM   #6
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can i assume that if there are no obstructions on the engine side, there will be none on the interior side?
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Old 10-05-2012, 08:37 PM   #7
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there is a rubber boot that you can go through on the passenger side and the cable will feed in right under your glove box. -that's what i did.


also, there is a hole behind the intecooler on the driver side, but i didn't go that route. -i'll be tapping that one tomorrow to install my boost guage though.
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Old 10-05-2012, 08:43 PM   #8
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ETA: pics

like i wrote in my previous post, it will feed in underneath the dash. you can route the cable along side the doors *or* along the center console. i suggest the center route as it's easier to unistall and the carpet removes easier.



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Old 10-06-2012, 08:59 PM   #9
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Quote:
Originally Posted by tru scoob
making a hole in the firewall to get the wire through.

That's how you do it. find a spot with no obstructions, get a proper size hole saw or unabit and watch the metal fly
That is just about the last resort. There is always factory locations with rubber grommets you can use. Never came across a car without them.
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Old 10-06-2012, 09:28 PM   #10
gunz4me
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I ran mine through the driver's side fender. Didn't get any pics of pulling the fender liner to run it though. It was a royal PIA too.

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Old 10-06-2012, 10:43 PM   #11
tru scoob
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Quote:
Originally Posted by dsn112 View Post
That is just about the last resort. There is always factory locations with rubber grommets you can use. Never came across a car without them.
You'll be hard pressed to get anything bigger than 4g wire through the"only" accessible factory grommet on the pass. side. at least on the later model wrx's. Stinger makes a nice compression style firewall grommet for 1/0g and looks much cleaner IMO.
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Old 10-06-2012, 10:52 PM   #12
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I ran mine through the driver's side fender as well. This is on my '03 Outback, but there was a perfectly sized hole for the wire on the side of the engine bay directly in front of the battery to run it into the fender, then I just ran it into the kick panel, under the factory plastics and out to the cargo area. I don't think I was able to find an existing grommet big enough to run it through the firewall, but this worked out well and kept the engine bay cleaner (not that I really care about that).
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Old 10-07-2012, 07:04 PM   #13
djinn
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I'm in the Brooklyn Area if you need help with it i can give you a hand. I ran mine through the driver side firewall. 4ga kicker wire.
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Old 10-13-2012, 01:14 AM   #14
FrankWhizzite
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I see the cable thats attached to the hood latch runs in the fender, I'm gonna see if I can go alongside that
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