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Good to know. Mine do this all the time. Wondered if there was a problem now I know.I'm surprised no one ever put the correct answer on here as to why you guys are seeing this. It is because of the cutoff shield that is up when you have low beams on. When you hit a bump, that shield is moving ever-so-slightly causing it to appear that your lights are "flickering." When your high beams are on, that shield is moved to allow the full beam of light, so I doubt anyone would see this same effect with the high beams on.
And no, it is not specific to the Ford HIDs.
This picture here shows how the shield works. It is kind of the opposite of how you would think. The shield blocks the lower part of the beam in front of the lens:
Anyway, that shield is what is "bouncing" and making the light "flicker." I notice it a little over bigger bumps, but they're still 198989088 times better than the stock halogens. I will take some "bouncing" of light every once in a while over halogens any day.
Or so I've read...
