There's really nothing electrical that can cause this - at least on the car side. Not unless your alternator (regulator) has failed and it outputting too many volts - in which case the bulb is the least of you problems. This is not likely, btw.

Halogen bulbs are fragile, especially when hot. And cheap ones don't last long. Two days is a bit short though. A loose fitting might allow the bulb to jump about when the car is moving, which may kill it quickly.

Are you ensuring that there is no finger oil on the glass envelope? It is critical that you don't touch the glass part on halogen lamps - the oils in your skin adhere to the glass and then heat up and cause the bulb to fail very quickly. I always wipe down the glass with isopropyl when fitting halogens, just to be sure.

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)