Thanks MB Doc for the quick response. So if I short the power connections coming into the sensor with the engine on the clutch on the electromagnetic clutch should engage if its ok otherwise its dead ?
So far I've tested that theory and the clutvh did not engage just the high speed electric fans. I just want to figure out if I need to replace the red sensor or if the electro clutch is also bad. How can I test this out before just replacing everything ?