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Old November 22nd, 2011, 10:47   #1
FletchMan
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Join Date: Apr 2006
Location: Black Hills
Default Stupid Alternator Light....anyone have resistor diagram for instrument cluster?

So, I've been through all the paces for the alternator light. The alternator charges just fine once it kicks on (must be certain RPM) as there is a problem with the exciter wire / dash light combo. The blue exciter wire is 12v when I turn the key as long as I don't have it hooked up to the alternator. As soon as I connect it to the alternator, no measured voltage - just goes to 0v. So, everything would make me think it's the regulator. I replaced that - still the same result. Now I'm thinking there is a problem with the dash light and possibly the resistor. This thing should be going off as I know the battery voltage and alternator are equal and complete the circuit quite often. I then took apart the entire dash and removed the cluster. I couldn't tell what resistor should be measuring what and none look totally blown up. Anyone know what belongs to the alt light?
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