Your question is very important.
There are many businesses that are fine before installation.
An unexpected thing happened, it rained, and to make matters worse.
So be sure to pay attention to waterproof after installation.
After the light box is made, water must be sealed or guaranteed not to enter the light box.
When I installed the light box, I applied some glass glue to the punch hole.
It is also important to note that during installation, do not let the installation parts (screws or rivets) or the rotating head touch the inside of the lamp legs, wires and controllers.
The tools installed generally include electric drills, drawing guns, glass glue guns, etc.
If you need to make an iron frame for installation, you also need an electric welding machine \ toothless saw (or angle grinder).
It's okay if someone else installs it, but it's not installed, that is, it's not glued properly.
Waterproofing is the most important issue.