I have Mercedes 280 SE 1972 4.5.

Battery always need charging. I checked alternator at the competent and told me that charge and has no malfunction.
A possible tell me where to place an organized effort for this car.
Not inside alternator, but external (external).

Your vehicle has an external voltage regulator. Have you checked it?

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Fred Hoelzle

sjalood what voltage have you at the battery? 13 .4 volts is what you need out put .How old is the battery on the car . Clean up the connections on your battery? + and - .. .

The battery is new and I checked it is very good.
Voltage over 12V after start over 14 V.



Your vehicle has an external voltage regulator. Have you checked it? Wher is it?

Thanks