follow instructions from chillin-out but when you find the sensor you have to change the head of it by cutting it off and strip back the two wires one red and one blue. you have to leave about 3 inches of wire on the new sensor to cut sensor head off and strip those two wires back. join the red together, same with blue. now replace back in it's holder and fill with expandable foam. be careful when digging not to go through fridge wall