As long as the engine's been running for several minutes, an Ammeter will hardly
show any charging at all, as it only charges what it sees of "negative" load. If
the battery's full it will only idle. The voltage is a much better indication
IMHO.

PerL
87 Syncro 112i

Ken Hunter wrote:

> My multimeter won't read over 10A max but it will give volts which should
> show you where you're at. Rev the engine and put a load on the alternator by
> turning on the lights. You should see the volts climb which means it's
> probably OK. But since your idiot light is on suspect brushes or diodes. If
> you have the time or another vehicle it's cheaper to look at repairing yours
> rather than the FLAPS route. I have the same vehicle you do and inquired a
> few weeks ago on the list about upgrading to the 90A alternator. Check with
> Ken@VanAgain for details. Also I had a local Albuquerque auto electric shop
> quote me $80 to turn my 65A into a 90A. Maybe double check your readings also
> with a FLAPS or battery shop that has the big load tester and will test it on
> the car for free.