In this tutorial, we learn how to fit a dry lining back box. This is very easy to install, and the sides will grip the wires on your light. First, determine where you want your switch, then mark a quick line using a sturdy level. Next, you will cut out a hole in the wall the size of the box. After this, push the box into the wall. Then, you can add in the light switch to the box and secure it with the wires that are inside. This will finish up this project, just make sure the wires are place in correctly!