Sorry Roy - I had just looked at a Lawnmower question and missed this as being about a Vacuum Cleaner.
Forget my references to a kill switch - what a fool I am...
But the first part still stands - the length of the wire and a terminal with no wire attached are good clues to where to fix it.
A circuit diagram will be a technical drawing - component layout and very probably not isometric.
Horror Vacui, September 2014