Re: 1 wire alternator confusion

Posted by DavidPackard On 2022/12/8 12:38:36

Humanpotatohybrid:

I did a ‘deep dive’ on this subject about 15 years ago. Give me a few hours to find the binder that has all on the details.

Your comment about having to ‘rev the engine’ to get it to charge is suggesting that the alternator has internal components that would require the #1 to be connected to power source current limited to approximately 1 ampere. The indicator bulb is the means to provide both current limiting and a means to indicate everything is OK. There were GM cars that used small indicator bulbs and a parallel resistor to achieve the correct excitation current. All of that detail was under the dash, not internal to the alternator.

Give me a few hours.

dp