I have a 330 PCM and ordered a replacement alternator based on the OEM part number RA097007B from DB Electrical but it came and the electrical plug doesn't match the one in my boat (pictures included). I messaged the previous owner asking for a part number because he mentioned replacing it with an "upgraded", higher current version. I'm guessing when he did that he changed out the wiring harness. There's no part number on the alternator so I'm at a loss with how to find a replacement one that fits the current electrical connector. Any suggestions/ideas? There's also a plug connector towards the center that my replacement one doesn't even have. Does anyone know what that is for and if it is necessary?