In Reply to: Re: '63 tug not starting posted by Tim Daley(MI) on September 18, 2017 at 10:18:07:
this was a running driving tractor, the fuel shut off started leaking so i changed it. it is a 12v system. the wing nut on the negative side somehow loosened up so i had a bad ground which i believe is why the positive side wing nut got red hot. it was cranking strong before the positive terminal popped.