Jumpy volt gauge

1--Have you read some of my posts in reference to voltage drop in the ignition harness?

2--Does not matter which field wire goes to which alternator field connection

3--Did you do the MAD bypass as they suggest? I would at least temporarily for troubleshooting run a heavy about no6 wire directly from the alternator output post to the starter relay battery stud. If you don't have no6, use about 3 no 12's in parallel, or 4 or 5 no 14's in parallel

4--How did you check the regulator for ground exactly?

5--Last and "should have been first" what do you call "bouncing?" Are you watching a voltmeter or an ammeter, and where is it hooked up exactly?