on this diagram there's a red/black running from the fuel cutoff solenoid to the ignition advance relay. Seems to me that wire should connect to the cold start solenoid, not the fuel cutoff. Am I crazy? Thanks for the clarification.
Not at all. But your understanding of electrical systems is showing! The wire in question should indeed go to the cold start solenoid. And upon closer inspection of the marginal copy of an original 78 diagram I have, I'm not 100% sure if this wire is red/black (RN) or white/black (BN). Could you verify the wire color on your car?
Thank you for bringing the error to my attention! If you send me your email address, I'll send you the corrected diagram.
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Jim
Series 1 Euro 1750 GTV
Series 2 USA 1750 GTV
Series 3 Spider Veloce