On Wed, 23 Dec 2015 13:27:38 -0800, "Tony944" wrote:

YOUR CHARGER MOST BE ISOLATED FROM THE TRACTORS FRAME.
(99 to 1) THAT CHARGER IS CHASSE FRAME NEGATIVE THERE FOR
YOU WILL HAVE DIRECT SHORT.

No - you are totally mixed up and haven't a clue what you are talking
about. The problem has been found. It was as I suspected - the battery
was charged backwards and the generator was flashed to be neg ground -
so when connecting the charger "correctly" it was actually connected
backwards and was seen by the battery as a dead short.