QUOTE(Dave_Darling @ Oct 14 2014, 08:12 PM)
I don't know if I'd say "very detailed". They have details, but they also leave a lot out. They're not exactly the best factory manuals I have seen--but they are about the best print resource out there.
This website is probably your best overall resource, though. Check the "Originality" section for how lots of things were originally put together, and don't be afraid to ask here.
There are wiring diagrams available on Pelican Parts, though they are intended to show functions and not wire layouts. There are some parts diagrams there, too. I think they came from the factory manuals, as did the photos in the Haynes manual.
Don't overlook the factory parts catalog. You can go to Porsche's website, look for Porsche Classic, then Documentation. There is a PDF of the parts catalog you can download. The line drawings are not great, but they sometimes can show you the rough arrangement of pieces.
But asking here is probably the richest resource. Heck, I learn new stuff here frequently, and I've been messing with 914s for a couple of decades!
--DD
I believe there might be some factory manuals available on CD.
The paper ones come in several volumes and cost hundreds of dollars. A fellow in Canada was selling them about 10 years ago. I am not sure what he was doing was legal ...copyright infringment.