How to route 1/2" cable thru firewall on an 2004?
I've seen previous threads on how to get through the firewall, but the pictures I've seen showing a rubber grommet hole behind the battery simply is not there on my '04.
On top of that, I'm using one of the phat Rockford Fosgate install kits and the power line is almost 1/2" thick! Am I going to need to drill a screamin' big hole through the firewall? I don't even have a damn bit that thick.