Welcome.
While waiting you might peruse
@GAD 's reviews at
https://www.gad.net/Blog/gads-guilds/
We have found that many times the vintage wiring and the modern (Newark Street) wiring are the same (until you look at component values) and similar Newark Street models have similar wiring. There are not a lot of reported differences between specs for Newark Street instruments before and after CMG's acquisition of Guild from FMIC but there are spec changes when the manufacturing is moved to/from Korea, China and Indonesia.
Point being, depending upon your project and comfort level with electronics a similar schematic might be close enough.
If you let us know what you are trying to do you might not need a schematic.
If you are thinking about making changes there are several threads about how to get the wiring out of, and back into a Starfire. Aquarium tubing or dental floss are recommended
