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Old 06-14-2009, 07:24 PM   #8 (permalink)
imsolidstate
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LiftedBlack HD - that sounds like a killer deal. Let me know how happy you are with it, and if it lives up to the specs. I wanted the higher amperage alternator, but I needed my truck running so I took what I could get.

Just out of curiosity, has anyone ever measured the draw on their alternator to see how much current is really being drawn by the truck's electrical system? I only have an AC current clamp, and a DC current clamp is probably not going to be very accurate since there should be a pretty good ripple on top of the DC.

Maybe if anyone else is as curious as I am about this data I will find a way to measure it. I have been thinking about using the resistance of the alternator output wire as a current sense resistor, and measuring the voltage drop with a differential amplifier and an oscilloscope to measure the current that passes down the wire.

Maybe I'm just wasting my time, but I would like to know how close my truck and trailer with the lights on and trailer brakes gets to the stock 110 Amp alternator rating.
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