Finally diagnosed! Much thanks to you all and especially Jerry (Hotrod Lincoln) who went above and beyond.
Turned out to be a combination of a couple of things, bad grounds, and battery cables that weren't substantial enough for the 6v system.
I ended up getting 00 guage battery wires made from the local john deere. Positive runs from the battery to the starter motor. Negative runs from the battery direct to the bell housing of the starter motor. Once it was all set up, she fired right up. For such a simple system, I certainly ran myself around in circles. Thank you so much for everyones help and advice through all of this, I very much appreciate it. Im sure it won't be the last time im stumped and looking for help on the forum.
Now its off to enjoy it and get some gas! (Until i start pulling it apart)
