My wife has a 2000 intrepid, 110,000 miles. About once every 2 weeks, will go out and car won't start. No power, no lights. Like battery is dead. One time I got it started by turning on all power. Headlights, battery, etc. After minute or 2, everything came back on and started just fine. Sound like relay? Any help would be appreciated.
You may need to check voltage to and from ignition switch, when problem is ongoing. Intermittent issues can be a pain. If no headlamps when problem is ongoing, check the headlamp circuit and starter circuit. Check for voltage at the fuse box.