Charging problem

[Robert Deis]

 Hey, all. My 5kTQw stranded my and the gang in a parking lot with no
juice today..  One auto parts shop found "excessive ripple" in the
charging system (tested at the terminal under the hood), and another found
"charging voltage too low" (tested at the battery).

A voltmeter in the Cigarette lighter shows 10v with the AC and radio on,
11.5-12.2v with al accessories off.

So am I in for a new alternator?

-- 
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  Rob Deis                  "Let the people know beforehand what the law
  MiB3347                      is and what they are to expect."
  rdeis at io.com                              -- 18th Congress, Rec. 75