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Old 07-26-2020, 12:01 AM   #2
gmc684x4
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Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
Re: Alternator question

I am not familiar with that alt number

What is your truck and engine combo?

I got rid of the external regulator on my 68 in 1990 for si style 105 smp alt
I still noticed my light dim at idle

Putting pops 72 on the road going with a cs130 altenator with serpentine belt setup

The cs 130 cs144 have a better output at idle
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