I have a John Deere 145 which I use for mowing and snow blowing. Last summer I went through 3 batteries. I just found out that I have voltage draw when everything is off. I have narrowed it down to the voltage regulator. Any ideas what is causing this? When I disconnect the ground wire from the voltage regulator, there is still a voltage draw. I have checked the continuity of the ground wire and it seems okay. Any help would be great... do i just need to replace the voltage regulator? Is this a common problem?