You know I was just reading the second post in the link you gave me
"So, intermittent North indications say to me that you have a intermittent break in the cable or something for that conductor. Look for a nick in the cable jacket, or a place where the cable is blown about by the wind, and flexing could have broken a wire."
....I believe I am using that black cable coupler (which is located under an overhang in a dry location) to connect the anemometer cable to the extension cable....do you think that might be it....should I splice the two and use the splice connectors???
It's insanely cold outside so if I do attempt it I hope it works...
-Chris