[dcb]

dunno, pinouts and part numbers in here though:
http://www.brusa.biz/_files/drive/02_Energy/Chargers/NLG5/NLG5_Manual_EN.pdf

edit, bottom module is input, pin 1 is neutral (bottom right pin) pin 3 is line (bottom left). not sure what control pilot is (venting?)

It looks like what you are holding in your hand should plug right into the bottom (input) of the brusa.

 

[dcb]

ok so you can plug into the brusa, that is the tricky one, from the j1772 (don't know what that looks like), maybe this plugs into the other side of the j1772?!?

 

[dcb]

maybe that goes to the battery from the brusa? looks a bit like the diagrams at the bottom of here:
http://media3.ev-tv.me/nlg5_data_sheet.pdf

might be an older version or something, dunno, but the top plug looks like battery out in the pdf.