Electrical system problem

In the last 9 months I have had ghosts in the else seemed to be okay again. Electrical system and have replaced the battery and alternator. The radio reboots every time and today when I turned on the AC the warning lights went nuts and the car stalled. I really noticed the brake light and service lights staying on for a while but the dash looked like a Christmas tree. I stopped put the car in park and it started right up.