Somebody else may have done this, but I cannot find it anywhere if so.
Since I'm on vacation, 750 miles away from my car, I spent today colorizing my scans of the Haynes 1975 current flow diagram. I'm glad I did -it turns out it is different than the 1974 (especially the headlight wiring). I could never find color 1975 diagrams on the web anywhere, so these are presented under copyright "fair use" terms - the originals are still copyright by Haynes, of course. The images are somewhat useless without the original manual, since I did not upload the page with the key.
I may replace these with further cleaned-up PDFs some day. But I'm not in a hurry :-)
You can find them on my conversion blog at http://volt914.blogspot.com/2007/07/1975-c...ng-diagram.html
I'd put them directly on this site but I'm too lazy to figure out how to get around the image size limit right at this moment.