i am installing subs into my 2001 ford taurus. i have all of the wires ran except for the power wire to the amp. how do i run that to the battery? i cannot seem to find where all of the cars wires run through the firewall. does anyone have any idea. if not, where would be the best place to run the wire through the firewall?

I was going to look for an RCA port to see if I could wire subs but unfortunately I have the 96′ taurus, with its egg-console shape which the radio is in. Im pretty sure removing it has something to do with the 4 holes on each corner of the console. THANKS!