2012 200 amp install need help
 

I did not see a 200 section here but im pretty sure the 200 is the same as a 08+ sebring. Trying to figure out where there is a hole in the firewall so I can run a 4 gauge wire, Also would like to know with the stock stereo the best place to run the remote turn on wire? From what I see so far the cig lighter that turns on with the key in the front looks like the best choice. Also does anyone know what the speaker wires + and - rear color are.

Thanks,
Josh