Originally Posted by JustB_Rad
I did this as well, but the jack still works if you plug the 7 pin into a TV.
Wow, you are so right. I checked it out this weekend and am in the process of an addendum to my video. Installing a battery switch WILL NOT prevent someone from raising your tongue jack if they have a 7 pin plug.
This gives me an idea to find or invent a 7pin plug lock.
Thanks for the information.