The prior owner of my '98 W210 E300TD seems to have put HID/xenon bulbs and ballasts into the existing reflector headlamps. Not as good as the HID projector beams I have in other vehicles, but better than the factory halogen setup, in my opinion.

There is a well-documented way to put bi-xenon projector lamps in the W210, but you'll spend several hundred bucks and invest a lot of DIY labor in the project. I have neither the time nor the money right now.

Cheers, John

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'98 E300TD (W210) | Sold 6/09 with 205k and counting
'04 VW Touareg V10TDI