I put a b18a1 in my 91 civic hb and it runs like a beast but my alternator doesnt work? Im pretty sure its a good alternator and i am thinking it must be a wire somewhere. I have scoured the net for diagrams so I can trace this down but am running out of patience. If anyone has dealt with this or knows what im doing wrong please let me know. Thank you. oh its a b18a1 non vtec, obd0, using orig wiring harness from the civic and did a mpfi conversion. Thanks again.