I took apart my headlights to upgrade the projectors and replace the faded lenses, and mine were the same way. It honestly wasn't too bad of a job, but you definitely need a few days to finish both headlights - i replaced a lot of the wiring that was internal to the headlight. I also had to re-wrap the optics cables that lead to the angel eyes because the sheath around mine completely crumbled apart.

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2006 X5 4.8is