1972 Plymouth scamp charging and grounding issue

OK, very good to know that; 67Dart273's pix are worht a thousand words.

Do the test outlined in post #18 and see if the voltage output at the battery jumps up. I bet it will; the fact that you are getting a tiny bit of charging from the new alternator (as evidenced by the 12.93v output at fast idle) says that part of the alternator is good (stator and at least some diodes), and that test will confirm or deny that the rest of the alternator (the other diodes and the field and brushes) is good too.