Starter will not function, getting power to starter, dash lights go out when I turn key. Been back to dealer twice with problem. Dealer has checked connections, has remoted dash panel and "cleaned" conections. Suspect one of the " safety" connections needs more cleaning. W here are they? Other ideas? Dealer bypassed safety switches and started tractor but would not tell me what he did . How do I bypass the safety switches? Or is there something else I should do to solve problem?