This is for the Early Model 800 that has the O.D. of 4.1″. 3-Wire with Flat Plug End.
The Update is for that Plug End to Plug Directly to the Relocated Regulator and the other Regulator Plug Directly to the Battery. This Eliminates too much wire and 2 plugs that Fail. This method is now used on all newer models.
Search for this Kit if you want the Updated charging System.