Installed great with a modification. When mounting to a flat surface there is not adjustment downward. We raised the lamp assembly with a hard rubber grommet 3/4”. I would suggest the the m-10 hex bolt be exchanged for a m-10 carriage bolt as we did when we eliminated the package bolt out to accommodate the 3/4 “ rise. I took a little filing but we got perfect results. Much neater and easier to install and a better engineered result against theft. A metal rock shield would be nice over the plastic factory. Marc Taylor