Thank you LeAllan for the link just ordered one
Quote Originally Posted by The Buergers View Post
WirthCo 20081 7-Way Trailer Plug Cover, 1 Pack https://www.amazon.com/dp/B072J5VZ4C..._ZJ-qBbRJVJ5RF

I use these 7-way covers on my work trailers. I add a dab of dielectric grease from time to time to help keep moisture out during extended storage periods. I like the notch to secure to the cable while towing.

Just a thought on electrolysis... the 7-way is connected to the + and - of the batteries correct? Sitting in water in pin box could be source of electrolysis. My $0.02 for today.