WA 500 Komatsu A/c blower motor

:Banghead WA 500 Komatsu A/c blower motor not working. I have power at the 6 wire prong pigtail. I believe orange is hot when fan is to be on and when a/c button pushed on, the orange and red wire are both hot at the same time. But still the fan will not turn. Does anyone know if these units have a resistor somewhere. The fuses are good for the a/c blower motor and a/c compressor didnt check the rest but will check them all anyway. The pig tail for the blower motor only has two wires and they are for the orange and red hot wire when a/c on. :PointheadSo does someone know how this blower motor gets any ground since it doesn't have a ground wire at 2 wire connector plug in coming from the harness. Has anyone had this problem yet.

WA 500 Komatsu A/c blower motor