04-03-2012, 07:31 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,002
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Not Ranked
Think of it this way...
If your new lights drain off 20 amps, and the ammeter only shows 5 amps of current going through the ammeter to those lights from the alternator, then the battery is supplementing the needed 15 amps (discharging it), but your ammeter still shows a nice healthy charge of 5 amps! That's why you generally don't put a load on the battery side of the ammeter.
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