guys this is the second post..sorry but i am going crazy..I checked my fuses (not blown), blower motor works(tested it) changed realys and bought a new resistor and speed control potentiometer and the damn things still does not work Help...what can it be???? I have worked on it for the last four days and I am fed up. What can it be? . This last summer i went to my girlfriends house full blast with a/c left and tried to turn it on and just like that nothing was working not even the heater??? I am stumped on this one....desperatley in TX ....