I used some wet and dry and cut my headlights as they where in a really bad state! Really yellowy and misty. I spent about two hours on each light and cut them back with 1200, 1500, 2400 and finally 3000 grit. Then used a polishing compound to bring it back to clear. After this, I used some wax to seal it with a bit of rainx in the mix. I would have sprayed them with clear coat anti UV if it where not -2c and I was very cold and tired after all the sanding. Like a dumbass, I don't have a before, but I do have an after pic.

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BMW X5 E53 3.0 Diesel Sport | Sapphire Black Dakota Beige Leather interior | Year 2004

What I had updated
Carbon Effect Steering Wheel
Panoramic Sunroof Fix
PVC Replacement
All glowplugs and glowplug regulator
New discs and pads all round
All new front suspension links, bushes and rods