3 in one day?
 

So i got my car back from ford after they checked my car when the emmisions light went off A week goes by and I noticed 3 yes thats three head light bulbs went out on my car 2 headlight 1 fog they were after market headlights but does this make sense? any opinions? im all ears

If they are halogens and you handled them improperly they will burn out very quickly! Halogens are very sensitive to fingerprints and oil/dirt on the bulbs. If you handle them with bare hands they will get hot spots and burn out within a few hours of burn time, I know from experience!! Just a thought.

yea i read that on the instructions
Is it common for them to only last a year?

sounds as if there could be a problem with a ground

next time you are reinstalling the bulbs, try and clean the terminals a bit, they could be corroded

We've had our car for 1 yr and 28k miles. I noticed one headlight was out. I removed the not functioning bulb and reinserted it into the socket and it worked... go figure. It now works. I happened to buy a set of spare bulbs for when these really stop working.

Check the bulb contacts in the outlet. I had a taillight on my 99 Superduty that would appear to be dead but would go on the moment I removed the taillight to replace the bulb...I used some electrical contact cleaner and di-electric grease and that seemed to solve it.