Projector Headlight Problem

Projector Headlight Problem
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I just put a set of projector headlights in my car this past weekend and now i am having a problem with the lenses fogging up only on one side.The vents are clear.What can I do to prevent this from happening?Should I seal off the vents on the headlights or leave it alone? Also I have to drive with my high beams on to have regular diving lights.And turn off the high beams to have brights.Does anyone have any clues on why this maybe happening.But the lenses fogging up is really bothering me.....Please help

Thanks

headlights

I bought them off ebay so there might be part of the problem there but other than that they a good headlight.Thanks for the help guys.Ill try calling 50 resto.See if they can help me with the problems.Thanks to all of you...