Product review (4 stars): Saved a ton DIY!
We had the problem with our Whirlpool fridge where we could hear the fan running but it was just not getting cool.  We had a repair guy come out and he found that the original relay had failed.  He replaced it with this unit.  Fast forward a couple of years, and our fridge was doing the same thing!  We ordered this part from Amazon this time and voila, we have a working fridge again for only $12 instead of $200.  It was easy to install because we just unhooked the one the repair guy put in one wire at a time.  We also cleaned under our fridge and got a ton of dust out - fridge runs much better now!  The only reason for the four stars is the unit only lasted a couple of years, but that could be due to our dirty fridge or our power supply??