[Fot] Hooking up the light weight altenator

Robert M. Lang lang at isis.mit.edu
Tue Aug 30 08:13:38 MDT 2011


On Mon, 29 Aug 2011, Randall wrote:

[good info, but stuff deleted]

> There are a lot of variations, and your description doesn't match my
> alternator so I can't really answer.  But most likely you'll need to run an
> additional wire from a switched power source (ignition circuit); and the
> small brown wire won't be used.

This is correct. This wire is what energizes the alternator. Without this, 
you'll see 12 volts no matter what the revs are. With this connected to 
the ignition source, you'll get the expected 13.7 (plus or minus).

> -- Randall

regards,
rml
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