Back To The Future 3 (1990), Back to the Future Part 3 Wiring Schematic

original movie prop

This was the one schematic that was rolled on the hood of the DeLorean when Doc and Marty dug up the car in the old mine shaft.  There were a small handful of these made and each one was made slightly different.  There were a couple that were folded, and one had red markings on it.  This was the one that was rolled.