I would like to thank all for the information provide. The problem was really discovered while the car was overheating. I first saw the gages went dead while the car overheated. That is was I am trying to tie the overheating to a cause and effect problem. I have a Hayes book that describes a thermal switch/relay what is the function of thermal switch. My aux electric fan has never started also after repairs. I have purchase the fan switch but I can find the location of the sensor Help. And I will start looking for the ground this weekend. Keep the info coming I really appreciate

RafyR

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