Thanks for the tips! Why do you say place the power switch as far from the back as possible?To make things clear, tgecJ1772 that was posted has a very dhort neck so the off/on switch will be hard to impossible to fit. In my post you can see the marking on my J1772 plug. You should place it with a socket as far as posdible from the back of the charging plug. You should also put a shrink and glue the resistor.
One more tip. Drill the charging plug with a metal drill and not a wood drill. The wood drill creates debris around the hole.
If you use the same plug as I did, create 2 nitches on both sides of the front of handle so you will have a place to push a flat screwdriver and eject the plug if something happens. Also put some silicon grease around the front of the handle (inside) so you will have a soomth insertion and ejection of the plug.