Low charge to no charge issue pulling hair out

I cant figure it out everything I can test checks out. The alternator battery post when running at 14.04 tells me its making charge and everything in between has tested great. New voltage regulator and old one i had on car everything act the same. Hope someone can shed some light

✅KEY OFF Alternator BATTERY terminal matches battery

✅KEY ON Alternator 1 point drop normal loss

✅KEY ON-Alternator field terminal blue 12.58

✅RUNNING Alternator BATTERY terminal 14.03

❌RUNNING battery at 12.4 not charging at 13.5-14. If I remove voltage regulator connection charge drops even more to 11.9.

✅Alternator charges with lower charge field wire jump test (simulating green wire terminal)





KEY OFF WIRE HEALTH TESTING AT 200 ohms

✅Green field wire from voltage regulator side connector head to alternator side field terminal connector 00.8 ohms resistance

✅Blue field wire from connector head to field terminal connector 00.8 ohms resistance

✅Alternator battery charge wire (black) to bulk head (firewall side)00.6 ohms

✅Bulk head charge wire (firewall side)to starter relay (red)1.4 ohms resistance

✅Alternator ground terminal post wire to cylinder head 00.9 ohms

✅Green field wire with key on sparked when connecting jumper to either the voltage regulator connector side or alternator field connector side.



Interior bulk head side

✅Black charge wire to ammeter from ammeter terminal to bulk head connection 00.7ohms

✅Red charge wire to ammeter from ammeter terminal to bulk head connection 00.8ohms

✅Key on - Both sides red and black wires going into ammeter had 1 point volt drop. Matches the battery terminal on the alternator.