I have a 928D grasshopper mower.  When I last started the mower, the lights remained on even after I stopped the engine.  It started to smoke below the control box so I unhooked the positive battery cable (it was very hot).  When I re-hooked the battery terminal, the lights remain off.  The tractor does start but will not remain running.  I have looked but cannot find where it was smoking.  Any ideas?  thanks.