I have a 1999 bonneville se and i am trying to install my amp. I cant seem to find a location for a hole in my firewall. Am i looking in the wrong place or is it just that there is no hole for me to put the wire through. Any help would be greatly appreciated.

the guy who did it on my old car just poked a hole through some rubber peice under the brake and stuff that goes through the firewire and just ran it up the back of the motor. I dont know if it was a good place to put it but it was better then looking for hours for a hole. hope that helps

You could just run it up the kick panel.

on your fire wall on the drivers side behind the brake cylinder you will find some wires going thru a peice of rubber in the firewall.. use a flat head to poke the rubber peice out of the hole then just put the amp wire thru that same hole and then run it along under your floor molding under your doors..

...or be very carefull and drill a new hole, get a rubber grommet to put in the hole you drill and put the wire thru the grommet.