Things needed:
1. Fogs (obviously, lol)
2. Headlight switch with front fogs feature (double pull)
3. Fog light loom (it will be a complete loom with plugs for headlights/horn, etc, unless you buy some aftermarket one)
4. Reflector blanks that go between the fog and the indicator
That's it. Connecting is simple.
You will have to swap your old loom with the new one, and then just fit the fogs and plug everything.