Review on 🔧 FAERSI HVAC Fan Blower Motor Resistor Replacement for Dodge Ram and Grand Cherokee: RU109 973020 4720278 68004241AA 68004539AA 5012212AA Resistor by Ronnie Polk

My 08 RAM's AC fan motor seemed to work fine for short trips in the <1 hour range. Only on the way did the resistance fail after a few hours. In the picture you can see electrical "burning" when a high current flows through an unreliable connection or a broken weld. Important - since the resistor emits the most heat when the fan is set to LOW, it is best to ALWAYS set the fan to high after the first run of a hot machine to avoid overheating an already very warm/hot resistor After your machine has been in the sun all day it gets even hotter. It just makes sense.