Hi... I’m new here but hoping to get some help with a problem my newly purchased 2006 l322 4.2 supercharged witch I luv! Is having.
My battery light recently came on so I parked it in my yard where it sat for a couple months I started it often with help from my battery charger/Maintainer until a couple of days ago when my ignition switch wouldn’t turn a second time after Initial start.
When she first went down I Suspected the battery so I removed it and took it into AutoZone to have it checked where they informed me it was a good battery. I’m wondering if a new alternator and battery will fix my problem? Also I don’t hear anything when I insert my key into the ignition anymore

 

What voltage are you getting at the battery when the it’s off? What voltage are you getting when someone else is turning the key?