Ok I can't find any holes in the firewall...are there any or am I just blind? If I have to drill, anyone know of a safe place on the drivers side where I won't be drilling through any electronics? Thanks.

 

You can run your 4 gauge wire through the emergency brake gromlet. You'll have to take the right side of your driverside front wheel well off so u can get to the backside of the gromlet. It's easiest to run the wire down the slit in the engine right above the wheel well and then thru the emergency brake gromlet. Hope this helps.