68 barracuda wiring help

Thought so too, but colors are AFU

Agreed!

But there is light green and looks like 2 dark green.

Third wire should be (2) tan if it is blower.

Picture is not the best.

Rear speaker would only be a 2 wire plug, and delay would have orange in it and seems to be in the first picture shown. Like some else mentioned it could be custom made to replace an original.