Where did you get the diagram you posted? It looks like American AutoWire?? Is it the one that came with your LMC harness? Are there more sheets?
"Factory Fit" is a trademark name of AAW. Looks like AAW 30905. The LMC page 112 says in bold caps. "Harness does not come with wiring diagram." ? If your harness looks like the diagram, pre terminated contacts, terminals and connectors and is from AAW, you are in fat city.
The wiring diagram came with the harness from LMC. It is AAW 30905 for 47-49 Chevrolet Pickup. That is the only sheet with the exception of a wire usage chart instruction sheet on the back. The wiring harness looks exactly like the diagram with all of the pre-terminated contacts, terminals and connectors.
