Mounting Modules In Door Panels?

What I have done when mounting the modules in the door is to encapsulate the modules to protect against weather, for example: put the modules in a heavy plastic liner/bag and seal the bag around the wire harnest, which I also loom/tape. I haven't had problems doing it this way.  I have fixed cars where modules were installed in the doors, not protected, and failed because of water damage.

Also, some door panels have enough room to hide the modules, then put it there that way they are outside the door and won't be affected by weather.