i was able to get access to the battery but now i am having difficulty routing a power wire from my amp in the trunk up to the battery any advice how i should run it?

 

Run along the back panel, maybe zip ties. Run along where the back seat curves in. Follow trim to front of vehicle. Punch through the rubber where the wiring harnesses go into the engine compartment and then to the battery.

 

the way i did it i punched a small hole in the firewall now keep in mind its a 2 piece firewall u drill thru 1 piece into some empty space then into another peice, then under the carpet all the way to the backseat, then under the backseats into the trunk compartment under the carpet to the amp. find whatever route under the hood is best for you. i piggybacked it along some other wires going into the car and used zipties to secure it

 

I prefer keeping it inside as you don't have to worry about the weather getting at it on the bottom of the car. My LED ground effects have taken a beating even with plastic covers.