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Old 05-08-2007, 01:37 AM   #1
my77stang
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Default How many amps do headlights draw?

were talking normal, 3 prong round glass old school headlights. im looking into a taurus or mark VIII electric fan for the II but from what i read they gobble up about 30 amps of juice and my alternator is a 60 amp. will 30 amps be enough for my basic radio, msd box, and driving lights?

thoughts?
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Old 05-08-2007, 01:51 AM   #2
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Default RE: How many amps do headlights draw?

I seem to remember that headlamps were rated at 55 watts, divided by 12 volts equals 4 1/2 amps per light. I don't remember if that was high or low beam. So figure 10 amps for headlights and add up the rest of current draw (I=P/V) items to see what youhave left over from a 55 amp alternator.
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Old 05-08-2007, 01:51 AM
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