hi there, my alternator puts out a voltage of just over 12,5 volts. I've already had it rebuilt (diodes, windings) and the regulator replaced. My battery seems to be OK with 12,2V and an 80% charge. and the voltage is still only 12,5V
a couple of days ago I experienced a lack of electrical power when I turned on the lights, climate control and radio - switching on the hazard warning lights caused the radio to switch off. later that day I had problems starting the car - the battery was almost dead.
what's the problem with my alternator - help please.

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1987 300E 185k miles