Well, just did an interesting test. I unlocked to OBC and did the voltage test. At the same time I had my multimeter on the battery terminals to read the voltage. The OBC consistently read close to .5 volt too low compared to the meter. With the car off the meter read 11.85 volts. I started the car and it went up to 13.6 or so. Then I turned on the headlights(keep in mind they are not coming on but I have the switch set on headlight and not parking) and the meter went down to 13.4. Then I turned the high beams on, 13.3. Then the HVAC fan and both seat heaters on high, 12.8. Finally I had the wife roll down all four windows at the same time, it went all the way down to 11.9 and the interior lights dimmed. Meanwhile, she was reading the voltage on the OBC and it was consistently .5 less than what I was getting. This to me almost points to the alternator for sure. Shouldn't, no matter what electrical load is on the car, the meter read almost a consistent 13.8 or so? This would also mean to me that there is not enough juice to fully light the ballasts on the lights, hence the flickering when they try to come on. Tomorrow, I'll take the car to autozone and get them to check out the battery and alternator and report back. I'm almost sure I'll be replacing my expensive water cooled alternator when this is all said and done.