I'm going to add a single 10" sub to my 2006 Silverado Crew Cab.

Where is the best place to run a 8 GA power wire through the firewall?

Any pics?

 

on my 00 their was a graumet,sp?, behingd the ebrack pedal but up a little. under the hood it is right behind the fuse box and that support brace. between the brake booster and fender.

 

I went through the big grommet with the main wiring harness. directly above the fuse panel on the driver side floor/firewall or under the brake booster. Just take a pcoket knife and slit it on both sides and run a coat hanger through it - from there you can tape your wire to the coat hanger and pull it back through. I've done this on 4 trucks now.

 

Maybe not the best way to do it but I also used the stock grommet like described above. It works

 

Yep me too, I ran a 1/0 gauge wire through mine. I also drilled two more holes close by to run the rest of my various wires though. Filled up both holes already

 

I put 4 gauge through the driverside door, here are some pics.








Then under the driverside panels.

 

ghetto ^^^^ run it through the spot for the clutch pedal that you probably dont have used. under the driver side dash. easy to find

 

I've run a bunch of different wires through the stock grommet...it's a bit of a bear to snake em through, but it's doable. Gonna see if I can find some pics...

 

Here ya go...

 

yeah thats the one....looks a little bit better IMO