Fog lamp
Senior Member
Joined: Apr 2008
Posts: 2,582
Likes: 1
From: Fort Worth, Texas
I would guess water is getting in the housing. Maybe the seal is loose. They other thing that might cause it is a dirty bulb. When you touch the bulb, the grease and dirt from your fingers can cause them to explode.
Senior Member
Joined: Mar 2001
Posts: 3,248
Likes: 2
From: Rochester, NY, USA
Another big cause of bulbs exploding is touching them with your fingers during installation. DO NOT touch the glass surface when installing a bulb. The oils in your finger tips will cause hot spots on the surface of the glass - leading to failure.