Easy Simple Preventative Waterproofing! Ten dollars. 2020 Plus.

 
To show how more crud is definitely accumulating, the photo on the left was taken in March. The photo on the right was taken in May. 500 miles ridden between photos.
 
...My thoughts are that the gap is on all the bikes not for letting water out but for letting wind in. If there is wind blowing in there then water will dry out...Some of us use leaf blowers to dry our bikes after washing...same effect!.
 
I don't see how anyone thinks water can flow up hill to drain out. There are already drain holes in the bottom of the housing where the water goes out. It doesn't need any more drilled.

That opening can't allow anything to drain out being higher than the drain holes. You can see the salt and sand left behind AFTER the water drains out the BOTTOM holes already in the housing, not the opening in the welting that allows it to enter. Putting the seam of the new longer welting at the top stops that. It doesn't let any rain or road grime in.
 
Thanks for the info!!

Have you sent this to Triumph?

I'm curious if the R&D Guys take notice and make a positive change from real-life testing.
 
...My thoughts are that the gap is on all the bikes not for letting water out but for letting wind in. If there is wind blowing in there then water will dry out...Some of us use leaf blowers to dry our bikes after washing...same effect!.
You are correct

Sometimes Engineers do things on purpose.

I wish there was an Ask Triumph email that the R&D Guys would respond.

Example; When the 2018 Chevy Camaro ZL1 1LE Track Car debuted they had a Public Forum where you could ask a GM Engineer a Technical Question.

Its very valuable for the R&D Guys to get End-User Feedback as not every condition can be replicated during R&D Development.
 
Before closing I use this CRC Food-Grade Silicone Spray on any electrical component that can be exposed to moisture.
CRC Food Grade Silicone Spray

I use Food-Grade Silicone because regular Silicone has bad effects on your health.
 
I don't think it was designed to be 100% waterproof. More like, water-resistant. Where you want to close it off, at the bottom, is where excess water would drain. Closing a drain seems would not make anything better.

I don't think it should be 100% waterproof, as all the wire connections are water-resistant, enough.

It is not a jet-ski. The label says, a Rocket, road capable, do not dip in sea water.