I got a john deere 7775 with in cab heat and got the heat working left the heat running went to put back in the heat switch panel made a big spark and the heat isnt working any more any ideas. I was think of taking the two positive cables putting them together to see if I burnt the switch. Any Ideas how to fix this? Thanks for help here is the diagram of it. http://www.dowdatractor.com/pages/o...ONAL:_ELECTRICAL/24140003/2414D210D0304000018