I discovered another type of problem with them. Last winter, I was all packed up and ready to leave for Florida. I unplugged and discovered that the cold cord was so stiff, that I couldn't shove it in. It took me about two hours with a hair dryer to soften it up.
This year, I have it already retracted, and I am plugged in with an extension cord.
Retired electronics engineer. Avid paddler & birder.
2011 Silverado 2500HD, diesel, 4x4,crew cab, 8' bed
Palomino Puma 253FBS (27' 5er) & '94 19' Class B