Your car may vary. That temp sensor on my 1984 300D has a much smaller screw and 2 terminals. I recall one terminal goes to ground. It is on the coil- side of the fan relay, which you find mounted on the top inner fender driver's side (under plastic cover). A 2nd relay there actuates the AC compressor clutch.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans