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      02-07-2013, 10:06 AM   #43
ManiacGT
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Drives: Z4 sDrive 35i
Join Date: Jan 2011
Location: Manchester, UK

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Quote:
Originally Posted by BMWZ4 View Post
I've been thinking about doing this, since I really dislike my yellow headlights. I have a technical question however (more curiosity than anything and doesn't impact my decision one way or the other); how does only 1 bulb illuminate both rings? Is there some sort of light refraction taking place inside the headlight assembly to get both rings to light up, with only 1 bulb?

Dave
Refraction, yes, the two rings are 1 part.
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