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Old 12-06-2011, 09:53 PM
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Default Best way to run power wire into the cabin?

Just curious, what's the best way to get power wire into the car? Is there any existing firewall grommets that are big enough to safely feed wire through?
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Old 12-06-2011, 10:43 PM
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On the engine side of the firewall. Under the brake booster pull the foam junk foward and its 8-10 inches below the booster. youll see an oval shaped plug about the size of your thumb
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Old 12-06-2011, 10:53 PM
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^^^This. It's large enough for a single run of 1/0. I also managed to squeeze the wire for my siren for my alarm through it. It's easily accessible from the inside of the car as well. The only downside to it is it's on the driver side and the battery is on the passenger side. I had to run a full 20 foot package of 1/0 to reach the trunk.
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Old 12-06-2011, 11:05 PM
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thanks.
where's a good grounding point in the trunk of the wagons?
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Old 12-07-2011, 05:22 AM
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You could ground to a seatbelt bolt. You'd have to make sure you clean all the sticky stuff off the bolt. GM used a "gummy" sticker then put the bolt through that to create a seal. If you really want to do it right, ground it to the seatbelt bolt and crawl underneath the car and ground that seatbelt bolt the the chassis. Or, you could find an inconspicuous place to drill and run the ground wire directly through the floor to the chassis. I'd personally rather not drill a hole like that though. That's why I'd rather ground the back side of the seatbelt bolt to the chassis.
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Old 02-07-2012, 09:49 PM
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Quote:
Originally Posted by ejschultz View Post
^^^This. It's large enough for a single run of 1/0. I also managed to squeeze the wire for my siren for my alarm through it. It's easily accessible from the inside of the car as well. The only downside to it is it's on the driver side and the battery is on the passenger side. I had to run a full 20 foot package of 1/0 to reach the trunk.
I'll have to see how much cable I have... didn't occur to me that I'd need to run 20' of cable... most cars aren't that long
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Old 02-08-2012, 11:18 AM
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Hey I have always gone through the passenger side. If you pull back the carpet and firewall on the inside i do believe there is a spot there that takes you right into the engine bay under the AC lines. Or maybe I drilled it, I forget but worth checking!
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Old 02-08-2012, 11:21 AM
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I have a 17' Rockford kit..just run on the passenger side..my pics and write up
http://www.impalassforum.com/vBullet...d.php?t=268975
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Old 02-08-2012, 01:49 PM
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1/o on the drivers side:




inside:




trunk:

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Old 02-10-2012, 10:56 PM
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awesome pics. thanks for the assist
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