I started this because I really need help, I have tried to read everything out there and on this site to figure out my electrical issues, but a few months ago I put a new alternator in and it ran my car fine for a while but then recently it has been acting really odd. It started with the battery only charging to 12 volts when the car is running and dipping lower when running anything with electrical but then bouncing back when I turned them off, It then continued to do this but then switched to not bouncing back and just killing the battery. However this whole time the battery light has not come on at all even when the car is about to die and in the past, with the old alternator it would come on when the battery was about to die. I went and got the battery tested and it ended up being bad so under warranty I got a new one. It worked great for a few days still only charging to 12 volts and dipping down with lights but bouncing back, now it is just not charging at all, I will jump it or sometimes I won't need to, but then anything electrical that I turn on instantly kills the battery. I have checked all of the wires and it's telling me they have a good connection but now I am all out of options, can anyone please help I am all out of ideas and have no ideas where to go from there. Please help if you can!!!