Ok cool- thanks for this update. I'll have a search. Apologies if this is an oft discussed topic. I'm new to Alfas (but coming in from fiat coupe ownership, and club forum member), so I'm still getting to know the car. Hopefully I'll be able to share info too as much as I can.
I did some extensive googling yesterday and found suggestions that it was the taco, and a smidge of a wiring diagram. I've just bought the factory manual too so hopefully I don't bug people with too many newbie questions.
I'll traw your suggested tag, and update y'all with how I progress!