Quote:
Originally Posted by rotorwrench
Alternators with a bad diode can have a parasitic draw but a well functioning unit will have no draw at all. It is not in their nature to have a problem like that but it can happen over time with electrical spikes or excessive jumping of a worn out battery. I really can't speak to the reliability of the conversion parts. I only tried an alternator once before going back to a generator on my old 29 Ford. The 10si is very reliable using 12-volt negative ground (normal) components in a 3-wire configuration.
The kits used to convert a Delco 10si to 6-volt have a new diode bridge & regulator plus all the parts to overhaul one of these units. These parts and the polarity jumper are all thats needed in a conversion.
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I have to disagree with " a well functioning unit will have no draw at all."
A brand new alternator will have a minimal draw.
Diodes do not resist backflow 100% nor do they conduct current 100%.
Bill
P S I hate to agree with Brent but he's right.