First off I like the style and brightness. So much more modern than the old rv light. Very bright.For a utility trailer they would be perfect. As you have access to the back for assembly. As a surface mount, not so much. Few modifications and im happy :) basically had to disassemble, mount then reassemble and add two small screws and adhesive to seal the unit up. As the leds are not replaceable like a bulb, sealing them was ok.The provided license plate holder wouldn't work for me as it too mounts from the back.Looking forward to getting both installed and matching.