Joined: 22 Feb 2006
Location: Las Vegas, NV
After my swap, I noticed I was getting a dead battery within a day or two even though it was putting out the required power when running. I did an amp draw test and found a 4.5 amp draw from the alternator "sense" wire hooked up the alternator "F" post. Disconnecting it gets rid of the draw, but also does not allow the alternator to put out the required amperage to charge the battery. A quick search says some alternators could have a bad diode, but this is a new unit and "should" likely work just fine.
So I'm at a loss with my current knowledge base. I can get the alternator checked, but if it tests good, then what are some likely culprits to this amp draw? I know my grounds are good. My wiring should be solid. Do I even need that wire? Some sources say "single wire", but I'm not getting 14v when running without it. Grrrr.
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