After replacing my stock tail lights with aftermarket tail lights froim Ebay following my accident last winter, I have noticed that come spring, my right hand light got moisture clung into it. I thought it was nothing, and after a summer of condensation, the bottom of the lamp filled with water, staining the red reflective surface with a tarnished black. It looks horrible. I know stuff from Ebay has much to be desired and has poor build quality. However, I would like to know a solution that could take that tarnish off and find out why the lamp fills with moisture. Any common knowledge as to why lamps sometimes do this?