Product review (5 stars): As advertised, works like a charm...
It took about 5 minutes to install.  With some electrical knowledge, some common sense, youtube, and help from the Holy Father above, I installed this device and had my Kenmore Refrigerator/Freezer working again.  According to the package, the polarity didn't matter when hooking up the power.  (I had my fire extinguisher handy just in case.)  My compressor was not kicking on prior to the change.  Once everything was completed and I plugged in the refrigerator, the compressor kicked on, and everything was within operational specs in about 6 hours (freezer 0, refrigerator 38).

The money spent saved me about $2,400.00 on a new appliance.  It's also not a bad idea to clean out the dust while you have everything apart.  There shouldn't be a lot but you know what they say about cleanliness.  All the best to you DIYer's!