On the subject of waterproofing those wiring connections....
I have been using some handy-dandy silicone sealant for this for over 20 years. Note that it's not just smeared on, but rather forced into the end of each crimp fitting and than massaged all over the crimp exterior. It sets up in short order.
After you remove the excess from finger tips with a paper towel, your hand will shed water for a while, too!
I have taken apart the wiring joints for external mast-base circuits after about 15 years and when I cut away the fitting to install some new wiring for new parts, the old wire was shiny-new.
While certainly not as nifty as the adhesive-melt ones, it's a good second choice / handy alternative.