Ok..... Step 1 & 2:
so, I disconnected the green field wire and connected a jump wire from that terminal on the alternator to the negative post on the battery. The reading of the battery non-running was 12.90 +- 5. The reading of the battery with the jump wire was 12.95 - 13.00 at cruise. The reading of the alternator from the alternator posts was 12.96.
About to start step 4
I am completely unsure if the readings above are what they should be or if they are below and indicate an issue. If anyone knows, lemme know. I'll be doing some number checking later.