i had a friend who gave me one to tinker with being parts can't be obtained. You can use a whirlpool timer #482493. timer # dbyc903bl is wired as follows.... Brown wire is power coming to timer...Red is defrost heater...Black and purple are compressor and evaporator fan ...blue is neutral. This is a weird little timer tho..it doesn't time as quick as we are used to so be sure and give the refrigerator run time two hours before determining the timer isn't rotating.