That's strange....
I have Sylvania Cool Blue headlights in my Contour. I have the stock high beams,but have modified 9005 (high beam) Cool Blues to fit in the low beams. They're bright and work just fine,but when I turn my high beams on,the high beams flicker,almost like a strobing effect from every rotation of the belt. But if I turn my blower motor on it stops....

But your friend drives a Honda,so that's his first problem to look into.