Hello all, new member here.  I have a 90' L2050 that due to the cold, was having difficulty getting started so I had my battery charger hooked up and set to "start" mode when everything just went dead.  No ignition, no lights, no nothing.  I assumed I had blown a main fuse but can't seem to locate any main fuse on the tractor.  There is a fusable link which I tested for continuity and from what I can tell (though I am no electrical expert by any means) is that the link is ok.  Fuses to lights etc are all ok.  So is there a main fuse somewhere on this thing?  If not, what could it be?? Thanks in advance for any assistance.