Join Date: Dec 2002
Location: Saint Louis, Missouri
Re: 1 wire alternator
I have some concerns as to why you are going with a 150A alternator ?.
Do you need this extra output due to added accessories or why are you doing this ?.
While swapping in a 150A alternator to replace a 37A-62A original that was on the car is fine, the car if it did only require 35A, the new 150A alternator will provide that as it will monitor things and then only output 35A. If the car then requires 20A of power then the alternator output will be reduced to 20A. The issue one might run into it if the current demands are larger than what the original wiring can handle. If you were to add let's say an additional 60A of current and get this power at the battery and retain the original wire between the stock alternator and the battery, this wire may become overloaded.
While the original ammeter gauge is only setup to read +40A to -40A, if you go above this the gauge will be off scale and then I wonder how long that gauge would last being designed to measure this +40A to -40A if 100A is trying to be read. Thinking out loud here, maybe think about changing out the ammeter for a volt gauge. That would probably give you more information than the ammeter.
1974 Spirit Of America Nova (being restored), 1973 Nova Custom, 1968 Chevy II (Garage Find 2012)
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