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Can somebody suggest a good bulb?

Joined Jan 2015
330 Posts | 1+
London
My dipped beam has just gone out. I have no idea what's good in terms of bulb technology these days (not that I need it with kuksul's lights on there, I swear I could see straight through the colour black with those things pointing at it) but I'd still like the brightest thing going. Even if it's just to make me a bit more visible to those pesky London drivers...
 
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Yeah, it's an H4 in there. I wouldn't go for that specific bulb though as you can see it has a blue filter wrapped around it, reducing output unnecessarily. Your eyes are most sensitive in the yellow to green part of the spectrum anyway, so blue light 'feels' bright but is less efficient as illumination.