the fan is not on until you jump the wires to the thermistor. is that correct?
I edit the last response
the ohm meter needs on lead on the negative post of the battery and the other meter lead needs to be on the Blue/white wire. the reading should be open no continuity. if you have no continuity their test the blue/white wire to the LR60 controller it should show no continuity on a cold unit. it will show a ground when the coolant gets above 215 degrees.
let me know the results when you get them