Originally Posted by nwbronco
The cover needs to be completely sealed while under a vacuum. It's the only way to keep the air out. If there is any in it the ambient air will cause the issue. It is possible the lens is not sealed. You could try re-sealing them.
How much moisture are you getting?
It fogs over %60 -%75 of the lens. If I try to reseal them myself the warranty is void. I can take them back to 4Wheelparts and get them both replaced, however, I do not want to be doing this every 30 days. I've already been back four times.