Ignition Switch
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
After testing starter solenoid and relay, test ignition switch and wiring. Refer to the IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS or appropriate SYSTEM WIRING DIAGRAMS article for more information. Check all wiring for opens or shorts, and all connectors for being loose or corroded.