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I just got my new amp and am having the hardest time finding a place to run through the firewall from the battery to the amp itself. If anyone has any suggestions it would be greatly appreciated.
I dunno how big the wire you're running is, but i have mine (8 AWG) run through one of grommets on the A-piller of the driver side door. You can easily pop one out and drill a hole through it or X it with a razor knife. I suggest using wire loom around the cable up to this point. There are some holes from under the hood to the inner fender that you can route to the cable through. Pretty easy from there, just pop off three trim pieces and you are pretty much to the back seat of the cab...
look high on the firewall under the dash, you will see a grommet with 1 cable runnign through it. 8ga is small enough to run off the the side of that grommet. just take a razor knife and cut a small slit so you can pop it through. I ran 4ga and just drilled for mine.
I know where the grommet that you are talking about is but once i get the wire through it, it just bunches up and coils up in the frame. How and/or which way do I push it through.