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      02-07-2013, 09:34 AM   #42
BMWZ4
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Drives: '23 X1/'23 Allroad Progressiv
Join Date: Apr 2010
Location: Toronto

iTrader: (1)

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
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'11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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