service manuals
I just bought a reprint of an original wiring schematic for my 70.
I picked it up at a car show at California Speedway.
The company is JIM OSBORN PRODUCTIONS
101 Ridgecrest Drive
Lawrenceville, Ga. 30245
(404)962-7556
They might be able to help you with an original if that's what
your looking for. :thumleft: