Read these, if you have more questions after this don't be afraid to ask.
http://www.6gc.net/forums/index.php?showtopic=77088For the power wire from the battery you can use existing holes:
Remove the wheel well plastic on the drivers side.
You will notice that by the top on the door inside the fender well that there is a rubber grommet that wires go through.
Cut the grommet from the end closest to you down about an inch, this will give you enough space to fit your power wire through that grommet, then you can follow that same wiring back to the engine bay and connect the power to your battery.
Run the power wire on the divers side of the car, and run you speaker wires to you amp on the passenger side of the car, if you don't you risk having power interference with the sound and you will get a low static noise in your bass.
Also if your amp is over 500watts, it is wise to get a higher output alternator, many people use a capacitor, but that is just a bandaid, and most times you will never know if it has gone bad.
my cap. went bad and i blew my alternator.
here is a nice alternator someone here showed me.
http://cgi.ebay.com/ebaymotors/93-99-toyot...sQ5fAccessories