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Old 01-12-2011, 05:02 PM   #7
Strodder
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Join Date: Aug 2008
Location: Hesperia, Ca
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Re: Project Vitamin C-10

Quote:
Originally Posted by 66BowTieBoy View Post
Hey Alan,

When the key is turned on the alternator warning lamp current flows from the power source at the coil through the warning lamp, through the resisters, transistors and field coil of the alternator, then to ground causing the lamp to illuminate. Once the alternator is at full output, voltage from the diode trio, also applied to terminal 1, equals the battery voltage. So, with 12 volts on both sides the of the lamp there is no path to ground and the light goes out.

Danny
Well said Danny.
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