lol i couldnt either the only way i found was the way i did it lol my first amp install ever

just follow the bonnet cable it fits through the same hole. i've got 4 gauge running through mine, fits with ease

Just follow the bonnet cable from the engine bay back towards the firewall as some have suggested. It dissapears into a hole through the firewall on the drivers side of the brake booster hidden underneath some welded bracket. You can also see a whole bunch of wiring going underneath it next to the booster. If you have cruise control, then the cruise control module will also be sitting underneath this metal shelf/bracket/whatcha-ma-call-it.

If you don't have a manual, just feed it through the clutch hole in the firewall. It is on the Passenger side of the brake booster above the exhaust manifold.

yeh i was going to follow the bonnet cable but couldnt figure out where it went once it went through the whole thing near the break booster, and i couldnt see in there to get it through but ill have a go at the bonnet cable again tommorow and try and get it through there because it would end up in a better spot and not too close to the exhaust manifold

if u want it to be neat take out the inner guard lining and there will be a masive gromet in the drivers kick panel just run it above the wheel cable tie it to the existing wires and it will pop out right next to the battery and through the rest of the car as normal thats how i ran 0 gauge