I'm about to wire up an amp to power my audiobahn rear speakers. I took a quick look at the firewall and didn't see an obvious holes that to run the power wire. Did you guys drill your own holes or is there one that i missed? Any advice appreciated. Thanks

 

s13 ? s14 ? i found a hole that some other wire was going through on my s14, so i sliced it and got 4ga in there. it's near the steering column (?)