Peugeot 406 407 Repair and maintenance manual, oil and filter change procedure, wiring diagrams, engine and transmission diagnostics, error codes, fuse box locations.. This document provides wiring diagrams and component information for the diesel injection system of a Peugeot 406 with a P8C engine. It includes a nomenclature of components, identification of wire harnesses, color codes, schematic and installation diagrams, and the wiring diagram. The diagrams show the electrical connections for components of the engine, fuse boxes, and sensors that control.