Trying to find a complete and comprehensive engine wiring schematic, anybody have any ideas? Already tried the Haynes

Trying to find a complete and comprehensive engine wiring schematic, anybody have any ideas? Already tried the Haynes

Haynes has a very complete wiring schematic. The trick is knowing how to read the schematic cause it doesn't show you where on the truck the wires are, just their color and what they are connected to. I have tracked down many a problem with the Haynes manual's wiring diagrams.