Being lazy and not wanting to stand out in the freezing cold for to long, what do you mean by 'plastic cup' on back of light?Tomas44 said:You can buy them from ebay.Open plastic cup in the light on the back and put inside.You should fix easy,if condensation back,change new bag.Old you can dry on radiator and latter reuse.you can put 200g silica bag iside.
If you want,I can check size for you tomorrow.