[papajam]

Hey Jamie,
Yes, there's a possibility of an S4 diagram but I'm a little reluctant to try one. In 1982, Alfa changed their diagram format to show the many different electrical systems separately; not as the 'whole car' format used on the '81 and earlier diagrams. Although would it probably be easier to draw diagrams in the newer format, there would be many many pages of diagrams for one car. Let me think a bit on how to make it workable. In the meantime, if you PM me your email address, I'll send you a revised version of the '78 Spider diagram. It might be closer than the '73 diagram, but not by much.