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Please explain the charging circuit in automobile. 1. How does the charging light comes on when ignition switch is turned on 2. How charging light comes on when alternator is not or less charging?
Wiki User
∙ 15y ago
When the ignition is turned on, battery voltage passes down the wire to the alternator to 'excite' the alternator when the engine starts. When the engine starts and the alternator generates a voltage, the light is extinguised by the charging voltage cancelling out the battery voltage coming down the wire. If and when the alternator completetly fails the the light will come back on as there is no sancelling voltage. if the alternator produces a voltage lower than the voltage from the ignition switch then the battery light will glow.
Wiki User
∙ 15y ago
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Why is your new alternator not charging your battery?
The drive belt is not tensioned. The fuse in the line between the battery and alternator is blown. The battery has a bad cell. The voltage to the alternator field is missing from the regulator or ignition switch circuit.
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May be the Voltage controller circuit. Control the voltage for charging, and cut off when full charged.
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What does it mean when the battery light on the dashboard of your r reg vauxhall vectra lights up?
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What does the red battery light mean when it comes on when i turn on the ignition?
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2 wire nsizes smaller than the wire you are protecting.
Why does my 1997 Ford Contour GL 2.0 4cyl start fine but in gear and moving it stalls and jerks and runs even with the ignition off sometimes making loud screeching noise from eng?
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Code 41 jeep?
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