Not Ranked
I had much the same setup on my Cobra that Rick describes except I never had any under-drive or overdrive pulleys and I had a 100 Amp alternator built. When everything was on and I was racing the voltage would only drop to about 13 volts. It may drop to 12 for a second when I turned on more fans or something but it came right back up. Also you may want to check all of yur grounds.
Ron
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