I was wondewring about the fog lights that you can buy off eBay, the ones that come with the small switch that you install on the dash beside the coin holder...do these lights require professional installation? More importantly to me is...do they come on with the headlights or do you have to manually turn them on or off all the time? Do they shut off with the key if they are on while driving? Also, are they the kind like my Grand prix, where the fog lights go out whenever you flip on the highbeams?