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Old 01-26-2005, 02:45 PM
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Join Date: Aug 2004
Location: Norway
Posts: 43
Safe wattage H 7 100 watts bulb?????

I have a W 210 1999 with H 7 55 watts high light bulb. Can I put 100 watts bulbs in the lights,or will it demage the reflector / wiring. Have someone used 100 watts bulb in the light for a longer time? Or have someone seen a melt down on the light? Some says ,don't use it, but have they seen the demage theyself?
In my W 126, I have used 100 watts bulb many years, and no degage on the reflector.

W 210 E 240 1999
W 107 350 SL 1971
W 126 280 SE 1982
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Old 02-10-2005, 08:29 PM
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Join Date: Feb 2005
Posts: 126
No, do not do this.

The W210 headlamps are largely plastic. 100 watt H7s would produce much more heat than the standard 55 watt units and could melt the plastic reflector and housing. The "science of cheap" has come along way since the W126, so wiring, connectors, etc are built with less safety margins. Relays, heavy gauge wiring are required for high wattage bulbs and running these into a modern headlamp is a bit more complicated than with a 20 year old car. Plus you will confuse the bulb out computer. And there are the legal problems on running high wattage bulbs.

If you want your W210 headlamps to perform better, make sure they are clean, not pitted, and aimed correctly. You might want to try 30% or 50% plus H7 avail from Osram or Philips. Stay away from tinted bulbs. If you do not have the Xenon (H.I.D.) headlamps that were optional on your car, you could install them. Hella has a kit to retrofit these along with the leveling and headlamp washers. The Hella H.I.D. headlamps are even avail in a smoked look that I do not believe hurts performance as the inner bezel(non functional) is black instead of metalized making the lamps appear black.

Strange, but they are not shown in the 2005 Hella cataloge.
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Old 02-10-2005, 09:07 PM
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Join Date: Jul 2003
Location: Montreal, Quebec
Posts: 508
I don't know how "melt-proof" the light on a W210 are, but I know for a fact that original lights on a W124 are not very happy with 100W bulbs. Don't ask me how I know. Since "I know", I have installed Euro lights with 55 W bulbs.
I also know the Honda CR-V headlights cost $327.00 each ...and don't ask me how I know.
I have 4X100W bulbs for sale (cheap) if you want to learn what I learned.
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Old 02-11-2005, 04:41 AM
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Join Date: Aug 2004
Location: Norway
Posts: 43
Thank you Jackd and HIDgolf.
I will not put 100 watts bulb in my healight if the are plastic lenses in my car.
( Yes they are)
I have already buy a pair General Electric W 55 + 50 % and I think they are better than the old one. I have Xenon in my low beam light, so the high beam light with H7 bulbs are more yellow.
Thank you Arvid
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