Jaysenodell,
If you're running a JK, the computer actually controls the fog lights. If too much current is detected, it will disable the fog light circuit.
If you want to use the stock fog light controls, and your JK never had them, you'll have to buy the left directional signal/headlight stalk (pulls out to actuate the fogs), and have a dealer flash your computer to turn on the fog light option.
Better to just put a switch in to run a relay, and feed the lights from a fused source off the battery. There are numerous places to mount switches in the JK, my favorites are above the mirror or on the A-pillar.
Obviously if you don't have a JK, other rules apply.