firewall pass-through

Does anyone know where the best place to get through the firewall is on a 5th gen Lude (to hook up my amp to my battery).

just look on the firewall, from the engine side - preferrably close to the the bottom. You are looking for a round, rubber grommet - preferably, one about 1-1.5" around. Pop it out, cut a hole or slice in it, slip it thru the wire and make sure it is FIRMLY popped back in when you are done.