Ford Focus Forum, Ford Focus ST Forum - View Single Post - 2001 zx3 alternator rating?
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Old 11-09-2003, 12:24 AM   #11
vanace
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It just frustrates me that anytime someone says "my lights dim" that someone else says, you need to buy a hopped up alternator, when that just simply isn't the case

Your a little off here. My lights dim slightly, all stock, as it came from Ford, when I put the heated seats on. think of amps as capacity. Sure, you might have a battery with 550 cold cranking amps, but a 35 amp alternator will allow the lights to dim before a 35 amp alternator. I do beleive The circuts are made so the power draw when running go to the alternator first, and if over burdend, to the battery. So the stock alternator could be over burdend and draw on the battey to keep it going.
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