The blue one on the bottom is the auxiliary fan sensor switch.
The one in the middle (mine isn't green) is the A/C coolant temp sensor.
The one on top is the BVSV. Bimetallic Vacuum Switching Valve.
The cold start injector time switch is on the water outlet housing, its the one on top with the brown connector. The water outlet housing is what the thermostat housing bolts to. Then from there the middle one on the water outlet housing with the green connector is the ECT sensor (Engine Coolant Temperature for the EFI). Then the one on the bottom of the water outlet housing is the sensor for the stock temp gauge on the dash.
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