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Sounds like you have a seal problem, or a vent hose that is off. First take out the headlight [remove light bulb but do not touch it or you will have to clean it off afterwards]. Then look for a vent hole, usually located at the top of the light, they usually have a piece of tubeing attached to it, bent down so water can't get in or else some filter material. Take the tubeing or filter off and make sure they are not plugged. If they are plugged or missing water may be getting in or not evaporating through the hole. If the vent appears to be good (I know this will sound stupid), fill the headlight up with water and check for leaks between the two sealing halfs. If you find a spot where it is leaking it will have to be re-sealed, which usually entails cutting the two halves apart and re-sealing with a good quality ureathane sealant. You can sometimes get lucky and just seal around the outside edge where the leak is, but if it does't work then you have to get it off and start all over again. To get the moisture out of the headlight, just attach a vacume to the headlight hole and it will suck air through the vent hole and clean out the moisture. Good luck with it, and just to let you know motorhomes are not the only ones with this problem. Steve / Bev
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? Can I put a small hole in the bottom of the covers to let out the water and will it hurt anything long term.
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