a/t light and battery help

[mustracetsi]

Short story water pump went changed it. Drove the car four five minutes died. Bought new battery. A/t temp and battery light still on while car idles. Test battery getting stays at 12.3 while running and its 12.8 when off. Bought new alternator everything is tight and alt fuse is good I so frustrated and lost on point just to sell it. I love it, but car draining me. What else could it be. Please help me.

 

[1990dsmkid]

Do lights, wipers, and everything else work?

 

[mustracetsi]

Yes everything works.
Problem solved
Needed new terminals
And parts store gave me wrong size belt.