Hey guys. So my 2004 M3 started giving charging issues. It all started when I was driving on the highway and my negative terminal was loose and corroded. I was driving but my car turned off. I pressed the clutch and turned it back on. Then all the dash lights were illuminated. Battery light came on. Lights got dim. When I came home the oil temp sensor was out and road speed cluster was out. I replaced negative terminal and my battery is brand new. My old alternator was good but I ordered 2 more oem Bosch from FCP euro and tested them at Autozone and all 3 of them were good. Battery light is still on. Alternator is not charging the battery. Where should I start from?