Running a power wire in a 2004 Grand Prix GT

I haven't had this car for long and am hoping to install my sound system in it asap....however, I can't seem to find a decent spot to run the 4 gauge power wire through the firewall, if anybody can give me some tips as to where I might find a decent sized gromet or anything, that would be greatly appreciate :D

follow the throttle cables from the throttle body through the firewall. You might be able to squeeze a 4ga wire through there.

My free advice is to make very sure you sheath a 4ga B+ wire in split black conduit.

A short to ground without an inline fusible link (or a fuse) is going to cause a fire.

follow the steering column down to the firewall, theres usually a gasket looking thing that is around the steering column that you can drill a hole into pretty easily.

just as a heads up...if your car has on star, good luck putting an aftermarket cd player in there :2cents: