This illustrates how to modify a Bosch regulator so that you can take
the sensing voltage direct from the battery instead of from inside
the alternator.  This compensates for all voltage drops between
regulator and battery, bringing full regulated voltage to the battery.

<http://picasaweb.google.com/dbeierl/ModifyingABoschRegulatorForRemoteSensing?feat=directlink>

Yours,
David