Changing a vanity light does not take many steps to complete. However, please hire a licensed electrician to change the vanity for you.
Below are the steps they will follow to change a vanity light.
It is recommended that the length or diameter of a chandelier should be about 50% to 75% of the length of the dining room table. For instance, if you have a dining room table that is 100 feet long, the diameter of your chandelier should be between 50 and 75 inches long.
A formula to follow when looking for the size is: Length (ft) + Width (ft) = Diameter (in)