This project was fairly easy. All I had to do was unplug my refrigerator and remove the power supply unit located at the bottom of the refrigerator and replace it with the new one. Installation was easy. First you remove one screw to access the tray which you then pull out and remove 3 plugs connected in the back. The new replacement power unit comes with its wire harness and after you plug in the proper plugs into the power unit inself, the remaining 3 plugs will plug in to the refrigerator. Then all you have to do is slide the tray back in, screw it in back in place and power it back up. Project took me all but 20 minutes to complete.