How do you install fog light onto a 2000 Hyundai Elantra?

IT is a great big pain in the butt.
You'd have to purchase a set of fog lights either from Hyundai or 3rd party auto part store.

If you install it yourself, you just need to follow the installation guide. It is fairly simple.
Just make sure that you get your 12 Volts from the ''Key on'' wire and not the constant 12 Volts. this way your lights will shut off when you turn your car off.