Please help me locate evaporator temp sensor on a 300 sel. I found a sensor snapped through a hole in the air box just to the right of the expasion valve. This sensor has a 15" twin wire harness, is this it? I ordered a new sensor from fastlane and it does not have wires on it and it's description is ETR switch. Am I looking at the wrong part?
The original has a 2 pin connector with 15" of wire and the sensor has a 45 degree curve that snaps through the air box next to the expasino valve. The new one has no wire and is straight and smaller. Is there more than one?

My ac cuts out before it's cold enough.

any help will be appreciated.