Depends on the specific car. My 00 is wired for fogs. Quick check: look behind the driver's headlight and see if there is a two wire connector sticking up. That's your hookup to the fogs. If you have that, the car is wired. All you need then is the actual lights, a fog relay that attaches to the pink connector by the fuse box in the dash, and a switch. You can do the factory wiring or your own harnes from the headlight connector to the fogs, your call.
As far as the fogs themselves, they should bolt up if you have the hardware. Same bumper, same fog hardware.