Wiring Diagrams: 2003
WARNING: This page is about a different car, the 2004 Nissan Pathfinder, 2003 Nissan Pathfinder, and 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
For 2003 models, see STARTING CIRCUIT under STARTING/CHARGING in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.