Look behind you brake booster on the drivers fender side, on the firewall and you should see a blank rubber grommet about 1/2 diameter. You can pull it out by hand and you will see a good size hole there. Cut or drill out the center of the grommet, run your wires thru it, and press it back into the firewall. I used it to run several wires, including my amp wire.
![Image](http://i24.photobucket.com/albums/c3/ScotF/Pfinder/grom.jpg)