98 GMC Suburban, power through firewall

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=38601
Printed Date: May 15, 2025 at 2:55 PM

Topic: 98 GMC Suburban, power through firewall

Posted By: cannonfodder
Subject: 98 GMC Suburban, power through firewall
Date Posted: September 04, 2004 at 8:07 PM

Hello everyone. I just bought a new 98 GMC Suburban. I am going to put im my 15'' JBL and Power Aqustic amp. There is one problem. I am not sure where to run the power cable through the fire wall? There is obviously not any open holes to run it through :( I have done some looking and I might be able to drill a hole about 3'' below the where the steering linkage goes through. The only thing is that I am not sure if I should be drilling a hole in my fire wall or not? Or if I could some how run it under the car and up into the back that would work to. I was just wonder what you guys think would be the best way to do this?

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As dark and complex as the hell from which I spawned.

Replies:

Posted By: Chad7n7
Date Posted: September 04, 2004 at 10:45 PM

I have done some looking and I might be able to drill a hole about 3'' below the where the steering linkage goes through. The only thing is that I am not sure if I should be drilling a hole in my fire wall or not?

Yes, this will get you through the firewall, just be sure you drill to the side of the brake booster and not into it. And also use a grommet to ensure your power cable doesn't rub against the metal and wear the shielding off.

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Posted By: cannonfodder
Date Posted: September 05, 2004 at 11:19 AM

Thank you.

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As dark and complex as the hell from which I spawned.