I've been replacing 9003 headlights on a family member's '04 Chevy Aveo at an alarming rate. I think I've done 4 in the past year. Both left and right go out, just the low beams (dual filament bulb). They are always on with the DRLs. Not sure if they're at 100% power always, or if the DRLs run them at less than 100%. The latest doesn't look like it has anything wrong with the filament. What do you guys think? What could be causing these bulbs to keep burning out? I've been using Wagner bulbs from RockAuto, the earlier ones were made in Poland, now I get ones that are China made. They're only $2.51 per bulb, but with the shipping, it makes it around $5 a bulb.