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Old 12-24-2021, 05:50 PM
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Blas Blas is offline
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Cobra Make, Engine: SPF#0760
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The red light on the dash should turn on with the ignition key in the on position. Once the motor is running and the key is back in the on position (from the crank position), assuming the engines idle RPM’s are sufficient, the red light should go out. There are a trio of diodes inside the alternator. Your alternator is making AC current, and it is being converted to DC current. If any of the diodes are damaged or are beginning to fail, the red light will begin to glow a bit, and as the diode(s) continue to fail, the red light will get brighter and brighter. Most single wire alternators are not designed to have the charging light functional. There are a few exceptions out there and there is an aftermarket circuit that can be added which will make the red light functional again with a single wire alternator. Lots of people put way too high output alternators in cars with wiring not designed for large amperage units.
Blas
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