In a message dated 11/4/05 6:58:17 PM, maxjoyce@ipa.net writes:

<< I had a spare thermo switch of unknown condition and I plugged it in
the hole quickly, then with ignition on, used my heat gun to slowly
bring the brass part of the thermo switch upward in temp. >>

Why even bother wringing into the radiator before you know if it works?  Just
connect it to the harness and do the heating number al fresco.

George