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HID Fog Lights on a B7 Audi A4 and S4 | Nick's Car Blog
I just finished installing HID/Xenon Fog Lights on my B7 Audi S4 and it was super easy! The only tool you need is a T25 Torx bit and a pair of hands and you’re ready to go. I was worried I would have to remove the front bumper to do this, but luckily that was …