Where is the defrost timer on a Kenmore refrigerator model 363?

depends on the brand of frezzer .......either behind the plastic( panel/wall) in back off freezer could be at the top or the bottom on the side your ice maker would hook up..... or under the panel in the top of your refidgerator......if its just a stand alone frezzer there again it depends on the model i suggesst you try and follow the wires from the start cap on the comp for the freezer