Originally Posted by stephen99
Yes it does have a door. It's apparently a bit cheesy and other people (Jim Bennett) have found other higher quality access hatches but I can't help with that.
Yes, I do plan to use a hatch either with a built in box like these options, or one could build a waterproof box behind and access hatch. Regardless, I would still use waterproof connections on the bulkhead of the box if at all possible.
This one from Nuova Rade I kinda like best, but it is tough to find in North America.
(click on image for link)
This one more readily available from JR Products, and is available in a keyed of thumb lock version. I really see no need for the key for this application. Amazon and a few RV parts stores carry them.