You ought to see my customer's Saab's - I have set the fogs to stay on with the highbeams as mentioned and in addition installed hella 500's Amber at his request. The light output on his 2 Saab's crazy - and he uses them all. He has hit a few deer, and I'm not sure all the lights actually help him or not, but they do piss off on-coming cars well. lol
Tech 2 is you best way to customize your cars features and settings.