My foglight bulbs keep busting. The right side did it 2 weeks ago and now both bulbs have busted again. Anybody know whats causing this?

 

When you say "busting"what do you mean?If they are just going out,my driver side was doing the same thing,I bought a new bulb,it was out 2 days later.I switched what I thought was the bad bulb to the passenger and it worked.I had a loose connection in the plug!

 

The bulbs are actually exploding glass everywhere.

 

my ranger did that...turns out water was getting inside the housing...i sealed it up good and put a new bulb in and didnt have a problem till i sold it

 

You're not touching the glass part with your bare fingers are you? That'll create a hot spot which will cause it break.

 

Finger prints are definetly a no no. Typically that just shortens the lamp life.

What brand exploded any chance these are Sylvania's?

I made halogen lamps when I worked as an engineer for Sylvania and for Philips. Sylvania's capsule manufacturing process is such that exploding lamps is much more common then with others (Philips, GE, Wagner but not sure about other major brands). Once a lamp has exploded in a housing, you've got to either replace the housing or remove EVERY tiny particle of glass. Believe it or not, that small peice of glass that may land on the light up bulb will cause it to explode. Cold glass (the particle/peice) onto hot glass creates stress in the glass wall of the bulb and since halogen's are under 90 psi or so of gas pressure. It explodes.

If they are Sylvania's I'd go on their website and contact someone in the Hillsboro NH plant. That's where most of their automotive lighting comes from. See if you can get them send you replacements.

 

It's rare, but I have seen the odd bulb break after the glass was touched. More then likely a defect in the bulb itself.

Good point about the glass particles, I forgot that.

 

But guys what Im not getting both bulbs blew the same time. I only replaced one. I never touched the bulb and have never noticed moisture in the housing.