I want to update everyone, and thanks again for all the replies, this is really a great group of people on this site. I was getting frustrated and moved on to another project for a few days, painting an outboard motor!
I have the tractor running now, I basically started replacing everything electrical with the starting system, I was pretty sure it was a grounding issue even though I tested everything with a volt meter and it all looked good. I did get it started once or twice with jumper cables, but it would not consistently start. I have a new battery and replaced the battery cables, thoroughly cleaned the ground connection, replaced all the bolts and it started consistently. The ignition switch is still not working but I plan on replacing that wiring also. At least now I am mowing. I still have an overheating issues but that will be another post if I cannot figure that out!
Thanks again for all the help!!!