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Halogen to Xenon Conversion for B7 Audi A4s (2005.5-2008) | Nick's Car Blog
I’ve been asked how I did this conversion on my B7 Audi A4 in the past, so I’m finally getting around to writing it up in typical Nick’s Car Blog fashion to share with inquiring minds. It’s a great mod and while I won’t attempt to recreate step-by-step instructions, I’ll go into deep detail as …