The Peugeot 806 originally had 1.9 turbo-diesel or 2.0 petrol engines. The following pages contains detail explanation and description regarding the Peugeot 806 DHX (1.9 turbo-diesel) Engine Wiring Diagram. Included in this explanation: battery, air conditioning ECU, alarm starter cut-off relay, starter, alternator, instrument panel, engine compartment fuse box, ignition switch, glow plugs, advance solenoid valve, central locking control unit, harness, wiring color codes, schematic diagram, and wiring installation guide.
Find more information on Peugeot 806 DHX 1.9 Turbo Diesel Engine Wiring Diagram here (page 1 and page 2)