Temperature Switch OMC p/n 0386686 Test

[Terrapin]

I purchased the above "new old stock" temperature switch which came in the original OMC Bombardier box complete with brown instruction tag p/n 319993. Unlike my original sensor, this sensor has the additional ring terminal that gets connected to the engine block.

Prior to installation, I am testing this switch for continuity using my Klein Tools CL800 multimeter set to the audible Ohm setting. With a probe connected to each lead, I am not getting continuity or an audible continuity sound when the water temperature reaches the service manual specified 211 +/- 6 degree temperature or boiling point. In addition, I would have thought I would have continuity from the face of the sensor to the ground ring terminal, but I do not.

Is my "new old stock temperature sensor bad, or am I missing something in my test procedure?

 

[saltchuckmatt]

What engine and what are the two colored wires coming out of the sensor?

 

[Terrapin]

Sorry, this is a 1986 Johnson 150 HP crossflow V6, model number J150TXCDC.
My original temperature sensor only had one tan wire with a knife connector and there was not a separate ground wire.
The "new old stock" p/n 0386686 has a tan wire with a knife connector and a black wire with a ring tongue terminal on it that is supposed to go to engine block ground (a cover plate screw).