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Yes they are. Thanks for confirming that.

My question was could another sensor or switch that shares the same ground cause the reading on the outside temp display to be right on at start up and drop like a rock when car reaches operating temp?

Also A/C will not engage clutch when ambient temp is below 50deg F. Where does that information come from? Does the info go to the PCM and it allows Compressor to turn on or is there a thermal switch built into the compressor itself?

Thanks and Good Luck