Quote:
Originally Posted by rcounts
So is the stock alternator just barely big enough to supply all the stock electrical needs? Sounds like you're saying it doesn't even have enough excess capacity to drive a fan?
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The stock alternator is either 55 amp or 65 amp depending on vehicle. That's quite marginal if you want to run all the lights, the blower, the wipers, the a/c and the current fan. Adding another 20 amps or so for a Spal fan would put you behind the power curve at night under high demand.