I have a DR with a Kawasaki FH580V 17hp. Battery not charging, fuse blowing. Expect the voltage regulator output to be Positive 13.5VDC but it reads negative 21VDC. Meter is hooked up correctly. Installed a new voltage regulator and it reads the same. Input is 23-33VAC. Was blowing the fuse with the old regulator, but not with the new one.