Chevy cavalier alternator wiring Videos

Great video Brian. You are getting the crash course on all this stuff! Your voltages look good, but you may wish to measure your amperage output at idle as well. Those alternators are advertised as 100-amp but they fudge the numbers a little. Usually that's maximum amperage....at idle it'll be more around 75-80 amps. 10si alternators were superceded by 12si and then CS130 alternators as a few years went by because the 10si was simply at it's maximum ability. These were/are Delco GM alternators BTW. Not saying that's a bad thing or you chose a bad alternator, but you do want to think about your power load at idle. You know that electric fans temporarily draw a lot more amperage at startup than when running so that could have cooked your fan controller(it shouldn't have). Are you running an underdrive crank pulley? Back when I exclusively drove 5.0L Mustangs, anytime we had underdrive pullies on, you could watch the voltmeter drop down to 12v anytime the engine idled. Looking back on it 20 years later I wouldn't use them again.

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