With the J1772 adapter an easy target for thieves, I decided to make a lock that would prevent its removal from the car. I put it together in a few hours, so it's not pretty but gets the job done. I think a much nicer version could be made using water jet parts... It is made of 1/2" by 1/8" steel flat bar shaped to fit around the plug. A small piece of steel is welded inside the ring to fit in the area where the slide switch needs to go in order to remove the plug from the car. The hinge is made from three pieces of 1/8" thick plate along with a 1/4" diameter pin. The padlock holder is of similar construction. SInce I took those picture, I've painted it in a silver metal flake color (rattle can spray job, looks good from six feet away :wink Would anyone be interested in a "production" version of such a lock? By that I mean a set of CAD drawings to get parts cut. Some welding or riveting would still be needed.