In search of a colored eletrical diagram for under the hood of my 1977 gmc k35

[77GMC-831]

does any body have a colored wire diagram for a 77 gmc square body ?? I can't seem to find one anywhere that's printable.
chasing some wiring issues.

Thanks !!

 

[Ricko1966]

Go to the 3 dashes in the upper upper left corner hit the dashes,then hit forums,then hit squarebody reference library. There are the wiring diaghrams.

 

[84_c10_GMC]

I got mine at. classiccarwiring.com