1968 El Camino Wiring Diagram. Chevrolet el camino workshop manuals and repair manuals. The lower large terminal is the feed to the starter. 68 El Camino Wiring Diagram from guidelibraryswen.z19.web.core.windows.net Web 1966 wiring diagram. Chevrolet el camino workshop manuals and repair manuals. Web #2 · jul 11, 2006.