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post #1 of (permalink) Old 09-20-2015, 12:31 PM Thread Starter
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Want to get through 9th gen firewall

Has anyone ran a hot line through the firewall of a 9th gen yet? Is there a easy route? I wanted to ask before I taking things apart.

Last edited by RYD SLO; 09-20-2015 at 06:40 PM. Reason: 10 -> 9th
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post #2 of (permalink) Old 09-20-2015, 04:12 PM
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Are you talking 2014 or 2015? I know gm and wikipedia has them listed as 10th gen but we call them 9th gen here, but as far as running wires manufacturs have put as few holes and as small as possible through new car firewalls so it may be very difficult to run anything through the firewall
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post #3 of (permalink) Old 09-20-2015, 05:36 PM Thread Starter
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Ha! I don't what they call it here but its the 10th gen. lol! Newest body style. I know its could be a problem that why I thought I ask first. Looking at the steering column boot right now but if I don't get an answer I am going to pull the carpet and insulation down.
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post #4 of (permalink) Old 09-21-2015, 05:07 AM
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Has anyone ran a hot line through the firewall of a 9th gen yet? Is there a easy route? I wanted to ask before I taking things apart.
hey I have installed my amp power wire through my fire wall if you have a 14-15 this is for you. in the engine bay look for you coolant tank from there you will have to give a little pulling force to pop the tank loose from the mouning bracket don't worry its a clip ( don't loose that clip I almost lost mine doin this but found it shortly after). Once you have moved the coolent tank out of the way you will see a black rubber cap its about 5-6 in long on the firewall that is the best place to put anything power related and that is about it coolant tank goes back on easy and ur done..


let me know if anyone would like to see pics of the area that im talking about ill get them out when i have the time...
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post #5 of (permalink) Old 09-21-2015, 03:47 PM Thread Starter
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You forgot to tell me to pull forward on the reservoir. I was yelling at it for 10 minutes! Ha! Thanks, I got it.
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post #6 of (permalink) Old 09-22-2015, 08:21 PM
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Thanks for this info. I've been trying to run a 4 GA power wire from the engine compartment to the trunk without causing water leaks in a 2015 LT. Used your post and located a ~1/2" hole in the firewall. Easy access once the Coolant Reservoir is removed. Removed the factory rubber plug on the firewall and ran the wire through. No drilling or anything. Removed rocker panel trim and routed power to the trunk. Next project is to tap into the amp signal. Thanks for providing a non-hack location through the firewall.
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post #7 of (permalink) Old 09-23-2015, 01:56 PM
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You forgot to tell me to pull forward on the reservoir. I was yelling at it for 10 minutes! Ha! Thanks, I got it.
lol sry its been a couple months since i was in there glad you got it

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post #8 of (permalink) Old 09-28-2015, 09:32 PM
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Got the amp, sub, and line out converter hooked up but there is almost no sound from the sub. It has very little sound output. Anyone have suggestions?
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post #9 of (permalink) Old 09-29-2015, 05:58 AM Thread Starter
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What side of the amp did you connect the LOC?
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post #10 of (permalink) Old 09-29-2015, 11:46 AM
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I connected the LOC to grey 8 pin connector on the side of the factory amp. The four wires i connect to show to be for the front door speaker's
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post #11 of (permalink) Old 09-30-2015, 03:45 AM Thread Starter
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Did you check the gains on your LOC and amp? What LOC are you using?
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post #12 of (permalink) Old 09-30-2015, 06:14 AM
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With the gains on the amp and LOC turn all the way up i get sound out the sub if the radio volume is set real high.

Tonight I'm going to keep my amp powered by the car and connect the RCA wires from my brothers truck LOC to my amp. This will help determine if its a audio signal to the amp issue or an issue with the Sub/Amp side issue.
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post #13 of (permalink) Old 09-30-2015, 02:10 PM
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Hello i have a 2014 chevy impala (9th gen) also and am getting ready to do a amp install. Did you make sure to didn't cross the (+) with a (-) on the LOC i know that will cause low to no volume. Also did you find a amp turn on or did you use the one off your LOC? This is the wiring diagram i have.

Thanks,
Trevor
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File Type: pdf ampwd.pdf (80.8 KB, 77 views)
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post #14 of (permalink) Old 09-30-2015, 07:07 PM
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I had a little bit a loose ground at the amp. Played with the gains with some good bass songs and the 12" Sundown SA powered by a Sundown SAE-600D bumps strong in home built 2 cubic foot box tuned at 35 hz. LOC connected to front door speaker wires still from the factory amp (6 speaker car).
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post #15 of (permalink) Old 09-30-2015, 09:02 PM
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Where did you get youe amp turn on?
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