I was trying to change out my rearview mirror, and all of a sudden. My radio quit working. Then , I tried to start my truck and , nothing. Then I waited a while and tried again and it made that machine gun sound . lots of fast ticking, like maybe a dead battery. So I unhooked both battery cables and now I'm completely screwed. If u turn the key to the on position it sounds like rice krispy cereal. Lots of real quiet faint popping and electrical noises. I'm too afraid to try and start it. But now w the theft system is flashing , the car acts completely dead. The dashboard light will come on and headlights but other than that it just acts dead to the world. And this all started from trying to change out a rearview freaking mirror. I'm new here and bought this thing 2 weeks ago. Any help would be greatly appreciated.