I'm trying to figure out which engine sensor does what. So far I have determined the following:

Oil temp and pressure gauge senders are down by the oil filter housing.

Temp. gauge sender is on the front of the thermostat housing.
Aux. fan sender is on the right (passenger) side of the thermostat housing.


So there are three others on top of the motor -

Right rear with 2 prongs
Left rear with 1 prong
Center (near ICV) with 2 prongs

Can anyone help?

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma