Go into the Electrical section, where you posted this, and open the first post. It is a sticky with all the available diagrams listed, including your car. Post a reply with your email and request a copy from Jim. These diagrams are the best! You should consider making a contribution to the Alfabb.
1959 Giulietta Spider 750 (gone, but not forgotten), 1959 Giulietta Spider 750 (race car), 1959 Giulietta Spider 101
1971 Spider, 1978 Spider Veloce (gone), 1981 Spider Veloce
1986 Graduate, 1986 Spider Veloce (parts car)