The 80 is the year of the plug in fuses. The glass fuse ended with the 79. To add to the frustration, my 76 is different than my 79 and the 77 wasn't the same and 78 was really strange wit the amber blinker.
I only posted it because we have the 76 wiring diagrams posted but that's it.
And people have asked me about the 80 fuse layout.
I might post the 78 and 86 layouts too since I have those.