pcmalen said:I just purchased some headlights today and they had a reference to 9003 and H4. I had a dual front headlight failure with our recent cold in Spokane. I searched the forums for recommendations since I just replaced them last summer . What I found from a post was the "other" lightbulb in the headlights that is evidently designed to absorb some of the current and keep the headlights from burning out so quickly. Both of the other smaller bulbs were burned out. The poster said he replaced his smaller bulbs and had not had to replace a headlight for two years! Hopefully that will be the case. I will see. That is one of those quirky things that should be stickeyed.