Bulkhead Connector Stripped Threads?

You can use this as a start. It shows the general scheme of the main circuits. You can fill in the details and change colors based on what you find and what's in the '65 shop manual.
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In the 1965 MTSC they show a fusible link to the horn relay, but the text says that's only on the C-bodies.
page 13 Electrical Accessories & Service (Session 207), Master Technician's Service Conference