See photo comments. Not sure if they are waterproof on a boat trailer as the wires going into the back of the lights are unsealed. The lamp on the left has the wires entering the top of the lamp and I have to assume the body is flooded up to this point. Also, the left headlight has no drain hole. So if it gets flooded with water, how will it drain? Plus, they look great, look easy to install, and wiring is easy. I haven't installed them so I'm not sure how bright they will be. TO UPDATE. There is a drain hole on the left headlight. It's in the clear lens of the license plate and I missed it. I will seal where the wires enter the lights and mount them.
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