I have a little problem with one of my custom turn signal

I always have fog/water in it and it's very difficult to dry/clean it (i tried last time with a dryer but no luck)....when it dry naturally by itself it always comes back when its rainy outside


what can I do? got any tips?

try usin a silicone base sealer.....i neevr had any water or fog in mines

yea i get water in mine to. it goes away long enought.