I've noticed condensation on both my Buddy Club tail lights (driver and passenger side) but only on extremely cold days (around -30 C)
I'm not sure if this is because even the tiny natural amount of moisture in "dry" tail lights is freezing to the point it's visible, or if the tail lights are actually taking in moisture.
It went away when the temperature warmed up last time but came back recently and the temperature hasn't warmed up so I can't say for sure whether it's the temperature's fault or the tail lights themselves.
