Welcome to the forums. Don't be discouraged that you haven't gotten your answer yet. There are a lot of activities this time of year.
I'm not an expert on the later model Spiders but I have been wrenching on my own ALFAs since about 1978. I would eliminate the alternator by having it bench tested somewhere. Also, check your wiring and all the connectors and terminals etc. and look for improper patches and fixes. I would say 95% of ALFA problems are caused by bad repair and maintenance.
There is a Spider section of the forum and I would recommend posting there. There General sections are for more light hearted stuff.
Good luck.
I'm not an expert on the later model Spiders but I have been wrenching on my own ALFAs since about 1978. I would eliminate the alternator by having it bench tested somewhere. Also, check your wiring and all the connectors and terminals etc. and look for improper patches and fixes. I would say 95% of ALFA problems are caused by bad repair and maintenance.
There is a Spider section of the forum and I would recommend posting there. There General sections are for more light hearted stuff.
Good luck.