One of my four new driving lights get a little bit of moisture in it sometimes. Someone told me to put isopropyl alcohol in it after I remove the bulb then slosh it around, pour the excess out, and then let it air dry for a little.

Anyone have their lights do this, if so how'd you get rid of it?

 

I've had all kinds of headlights and taillights do this

In my headlights I just took em off and let them sit under the sun with a fan on them to get the water out

then just get some silicone and re-seal the lens

however sometimes I've found out that the lens isn't the cause of the condensation, if you wrap some teflon tape around the plug for whatever light your working with that should seal it better and not let any air to get in and cause moisture