Mazda protege 94
First, the battery couldn't be charged. I checked the voltage of the battery when the engine is on, only 12.5V. It would gradually increase to 14.1V in 5 minutes.I installed a new alternator. The voltage is only 12.2V. The output of the alternator is the same, 12V.
The belt and tension seem fine. Or if there is belt slippery, how could I know? The battery, though old, could be charged at Autozone. Mounting bolts are tight.
But I just found out that the horn and/or the horn switch doesn't work. For now, I will just disconnect the horn. Will this affect the charging system so much?
Could anybody help me to find what else could be the problem concerning the charging system? I am brand new here. I feel really frunstrated about the problem. Thanks a lot!
xingde j