Thanks Tractor Tech, based on other research (very little I could find online) I think you are very right. Everything I found mentioned that if the electrical components were faulty I would be engaged constantly in 4x4 vs not being able to be engaged. I will jack up one wheel and try to turn the wheel. Am I looking for it to be free spinning or locked in place? I am guessing free spinning means something would be broken in the transfer case? It is not sporadic as far as I know. I purchased the tractor and did not properly test it as I should have-so when I actually started to use it at my place, I noticed it was not working. I was so surprised with condition, hours, AC (which now has electric problems of its own), desired horsepower, row clearance, etc. That I technically did not recognize it wasn't working properly. High/low works great and everything else the seller said was spot on and I truly don't think he intentionally pulled a fast one on me at all, for all I know it broke on the trailer loading/unloading or shortly after arriving. (Feel like a bone head in my explanation, but that is technically how it played out.)
