I have an 05 mazda 6 4I had battery light coming on and off my alternator was faulty charging at around 9volts. I replaced it with a good used oem alternator and i am now chargin at 14.2 at idle. still have a battery light on. I checked batterry tested good i did a load test on battery and alternator and both tested good. With a load alternator drops to 13.7 and does not take long to go back to 14.2 volts. battery test at 12.57 ,conections on my alternatorand battery are all clean and so is the plug. Everything works perfectly fine lights accessories etc only thing is i have that dam battery light on all the time, no check engine just a battery light. ANy ideas im stumped ???

 

see my reply on: https://www.mazdaforum.com/forum/maz...roblems-30736/
with reference to earlier post, pics.