The switch is constructed such that, when you turn it off, it automatically turns the fog lamps off. You would need to install a separate switch for the fog lights if you want them on by themselves.

I went the opposite direction. I installed halogen high beam units in place of the fog lights and aimed them up and slightly outward so they light the edges of the road. I then moved the foglamp wire to the high beam fuse and changed the fuse to 16 amp. Thus I have "elk" lights if I pull the switch to the foglamp position and have the high beams on. The halogen lamps dim with the regular high beams and I am very careful not to let them blind any oncoming traffic.

(Alpine, AZ is at 8000 feet in the White Mountains and we have a ton of elk, any one of which will gladly give up his life to destroy your vehicle.)

Wes