My recent purchase of the '28 Tudor, an electric wipe motor assembly was installed, using an 120VAC electrical cord to supply power.
When I tried to open the windshield, it would not. I'm going to look into a little more when I replace weather stripping that goes around the windshield frame.
One thing at I thought about was using a quick disconnect for removal and re-installation of the wiper motor assembly.
I've also thought about seeing if any one would want to swap the electric wipe for a vacuum. I don't have any issue with the vacuum wipers, if I install a reservoir can with it.
That project is a month or two away.