Your not accepting PM's... But you should have 2 oxygen sensors, one is coming off the exhaust manifold (up stream) at the front of the engine... You will see a plug going into the manifold with a white wire coming off it... The other (down stream) is on the passenger side of the car underneath the front, if you have fog lights, look right where your access panel is and you will see a blue wire going to a plug in the exhaust pipe, that is your down stream Oxygen Sensor... This is what I know of my car, mine is a 97 Zetec, your's may be different...
