Alternator has me frazzled - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ol Curt · 11-18-2009, 11:07 PM

I recently noticed my GEN light staying on all the time when my truck was running. I reasoned it would be a good time to just replace the alternator with an internally regulated one. I followed the instruction in the FAQ section. I have 14 volts at the battery when the truck is idling, but the light stays on. I reversed the wires just to be sure...light stays on, but 12 volts at battery.

I'm guessing I had the wiring part right. What will cause the GEN light to stay on?

This is on a 250 six in a 66 C10 with warning lights rather than gauges.

11-18-2009, 11:07 PM	#1
ol Curt Junior Member Join Date: Dec 2006 Location: Newburgh, IN Posts: 1,247	Alternator has me frazzled I recently noticed my GEN light staying on all the time when my truck was running. I reasoned it would be a good time to just replace the alternator with an internally regulated one. I followed the instruction in the FAQ section. I have 14 volts at the battery when the truck is idling, but the light stays on. I reversed the wires just to be sure...light stays on, but 12 volts at battery. I'm guessing I had the wiring part right. What will cause the GEN light to stay on? This is on a 250 six in a 66 C10 with warning lights rather than gauges. __________________ 1966 Chevy C10 Longbed I'm Bob....ol Curt was my Grandpa The truck was his and he sure as heck wouldn't understand why I took a perfectly good truck and tore it down!



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