2012 e2 WILL NOT RUN

I have a 2012 GEM E2 less than 400 miles on it when I purchased. Just had new GEL batteries installed has been running great. Minor issue with a flaky brake switch and replaced and adjusted that. Yesterday I moved the vehicle to the street no problems and when I went to put it back in drive way it would not run. It had been in the low 90’s so I thought maybe some thing just over heated sitting in the sun. Pushed it into the garage and charged it overnight. Have just over the 72 v at the input to the controller, I checked all fuses, jumped out the brake switch just to be sure , still nothing. All lights, gauges, turn signals etc all work I found an owners manual on line but no help there but can not find a wiring diagram anywhere for this year. HELP please

NO error codes showing

Finally found the issue but maybe some one can explain why. The fuse that is labeled for the Radio /PA which neither is installed was blown when I replaced it all was well again.