Guys,
I saw this in action in 1985, last century.
A coworker re-wired VW Bugs and my 66 Karman Ghia with a cannon plug style connector setup so he could pull and swap engines as needed.
Hmmm, for some reason I believe he had access to mil-spec components as we both were stationed at a US Air Force base:-)
He had a V-Dub, his wife had an air cooled model as well, and he built/repaired these on the side...
It can be done as long as you bear in mind that it has to be weather proof or you clean the contacts regularly because of the contact current draw, etc.
Good luck,
---Wingnut86