Here is the diagram from the Sadowsky website:
And a little more info from the site:
Humcancelling J/J for 5-string (pair)
Note: Sadowsky J-Bass 5-string pickups are both the same size as a bridge position 4-string pickup. They are intended for 3/4" (19mm) string spacing at the bridge. They DO NOT fit Fender 5-string basses.