hey everyone. i post in here from time to time. im down at school and a friend wants me to install an amp and sub in their 96 Toyota Avalon. in that car, does anyone know where the grommet is in the firewall or anything so that i can run the wire from battery? also, does anyone know how i should run the cable to the back of the trunk because the seats do not fold down>? any help would be greatly appreciated, thanks.