My Battery indicator came on a few days ago. The brake wear indicator also began to glow at the same time. I put a volt meter on the electrical system and the voltage varied from around 12.8 to 17.1 . That seems a bit high. Today it wouldn't spin the engine fast enough to start; voltage while cranking fell below 9 in just a second or two. I borrowed a battery from one of my other vehicles to be able to keep driving.
Car is '82 240D 55Amp Alt.
Alternator is 6 months old ( I lost the receipt so no warranty)
My questions:
Is the internal regulator availible? at what cost?
Best source for good alternators?
Will this battery die also? ( The old battery did not show bulging of its sides), How quickly?