Reattached ground after 24 hrs. Tightened both connections up, started Jeep everything is fine. Checked for codes and have zero codes. Drove it for 10 miles and its still ok. This happened about a month ago too but seemed to go away when i disconnected negative cable. I just had a horn replaced last week because it just stopped working. Its a 2007 Rubicon and I've only had issues with the radio suddenly losing all its programmed stations or just not working at all for an hour. I bought vehicle used 2 years ago. Just weird issues