Hi,
The smaller one in the rear is the ECT for the computer (see Pic 1). The larger one with a light blue connector is also a temperature sensor. That one is the cooling fan temperature switch. It is what is used to signal when the cooling fan needs to be turned on.
What type of issue are you experiencing?
Let me know.
Joe
See pic below.
Image (Click to make bigger)
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Friday, April 15th, 2022 AT 9:05 PM