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Old 10-08-2002, 05:30 AM
Posts: n/a
Alternator problems

Many alternators require some current from the battery to enable generation to start, then start self-feeding excitation current. Initially this current comes through the warning light and a resistor - if either the warning light or the resistor have gone open circuit, you wont get anything out of the alternator without revving it hard. Check to see if this applies to MB electrics, check to see if a big rev (>3k) will start it producing.
As above, you should see ~ 14V when running, almost irrespective of electrical load if alternator is good.
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