Wow!
First, Thanks for your help and encourgement with this little project of mine. I deffinately would not have gotten this far with out it!
One the schematic, I did add the wire colors (and voltage of the red and blue) for the wires leaving the original regulator. Some of the wires do change color at that first connection. (green goes to white, blue to white/green, yellow to white/blue) and there are many splices and dead end wires down near the starter. tracing these would be a nightmare!
As for testing the new regulator out. I'm feeling pretty lucky!!
I really don't see where I have much to loose... I'll see what I can dig up over the weekend and give it a shot. My neighbor is an industrial electrican so he should have an extra meter and maybe a fuse holder for us to use...(but he's a kubota owner

) I had actually thought about doing something like what you suggested, but hadn't thought it out completely.
Thanks agan four the support! That's what makes this such a great forum!
I'll report back with some results soon!!
jb