I wanted to say a sincere thank you for this post. My truck had the quad/sport headlights when I purchased it; however, unknown to me at the time they were wired incorrectly. This had caused my headlights to go out twice.:banghead: I "fixed" it (incorrectly) once, and this post saved me from a lot of wasted time and frustration. I had to tweak it slightly due to my truck having HIDs; however, essentially it was the same. Thanks again for the great post!