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Two screws remove the front of the sensor (put a pan under the sensor to catch the screws), One nut removes the rear cover to access the rear of the sensor. Separating the two halves of wiring harness takes a little dexterity. BIG TIP! Tie a string to the back of the sensor wire and pull the sensor out from the front making sure the string still shows thru the back. If you don't you have a 15 minute job trying to fish the wires at an angle thru the insulation (a very frustrating task). Untie the string from the old and tie it securely to the new. Pull the string from the back and Voila! your new sensor can be plugged in or wirer nutted to the old connection on the back of the stove. Replace the nut and the two screws and you're done!