I was confused by the fact it says it includes a "rocker switch" because I wasn't sure if I could use my own or I had to use the one provided.  Wayfair was unable to answer my question but in fact, it doesn't actually come with a rocker switch so someone needs to update the description to avoid further confusion with future customers.  I had some struggle with installing this light because the plate that you must use to hold up the light fixture did not line up with my existing electrical box.  So I had to replace the electrical box which I had never done before.  Other than that, it was very easy to install and took me no time at all.  I installed it with the lights facing down so dust doesn't get inside the cups, plus I think it seems to make more sense to have the lights illuminating the room and the person looking in the mirror vs. the ceiling.