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Re: Re: Re: Another 12V Conversion Question
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Posted by Bob M on October 06, 2000 at 17:11:25 from (172.152.26.255):
In Reply to: Re: Re: Another 12V Conversion Question posted by Paul's dumb question of the day on October 06, 2000 at 15:50:05:
Paul - Not dumb question at all - I asked it too... Here's the deal: The original purpose of that warning light was to alert the driver of a vehicle equipped with this type of alternator system (most GM cars + some others) that the alternator was not working. Some vehicles - especially PU trucks and tractors - were equipped ammeter or voltmeter so the warning lamp was redundant. In these applications the warning lamp was eliminated. But there's a problem if you simply eliminate the warning lamp: The internal regulator looks for the presence of the warning lamp in the circuit - it needs the current flowing thru the lamp to "flash" the field so the alternator can begin making current after startup. In these applications a 10 ohm resistor - generally a piece of resistance wire in the wiring harness - is substituted for the warning lamp. Others have told me you can substitute a diode for the warning lamp, though I've never messed with diodes myself. I've found the warning lamp (or resistor) works fine - and it's how the Delco engineers orginally designed the system to begin with. Hope this helps... Bob M
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