Ignition switch?

I need a little help diagnosing a weird problem. 2001 3.8L auto. Was running fine last night. This morning would not start. Sometimes the dash lights come on and the dinger dings but it won't turn over. Then sometimes it appears to have no power anywhere. No lights, dings, radio, clock. Then sometimes it will just start dinging for a short time with the door open. The battery shows a full charge. It started and ran well one time but will not start again.

I think it sounds like a bad ignition switch. Anyone else have an experience like this?

Thanks for your help,

Got it

Just a follow up. It was a poor battery ground wire connection. Was make intermittent contact. I cleaned it and reattached it and all seems to be well.

Thanks for the help