1977 Mercedes 240d Battery Problem

[zaq121]

Hi,

I am new to the mercedes diesel cars although I have owned many other mercedes cars in the past. The problem I'm having with my car is the battery light started coming on when driving. The next day the car wouldn't start but I could jump start it. I tested the battery and charged it and the car worked fine for a few days. I noticed that the turn signals would would blink slow and then the car died again. I am thinking this is an alternator problem but I want to get a few opinions before I buy a new alternator. Thanks for the help.

Zack