Best source for wiring diagrams

I need a complete wiring diagram for my 68 Barracuda who sells them or where can I find one? I have all new harnesses and don't want anything hooked up wrong.
Actually sounds like what you're looking for is the harness connections.
The best source will be the assembly drawings. You have to buy them as a book from Faxon.
Second best source will be original unrestored or extremely well done restored cars. Some members have posted pictures to help others for just this purpose.
For an example of both see this discussion
69 barracuda wiring questions

For the complete wiring diagram, the Factory Shop manual is the most complete and accurate.
@1969383S traced these into pdfs. There's the one for '68 Barrcuda you can download in this post.
Why did someone splice into this IGN. 1 lead?