Is the 1972 alternator internal or external regulated?
Is the 1972 alternator internal or external regulated?
The 1972 external voltage regulator was still hooked up as original with all the wires. I’m assuming things were messed up when the chromed alternator was installed.
Where is the voltage sensing wire on a GM alternator?
The Number 1 wire on the 10- or 12-SI is connected to the charge warning light on the dash. The Number 2 wire is what is called the voltage sensing wire. When converting from an external voltage regulator to an internal such as the 12-SI, many enthusiasts merely connect the Number 2 voltage sensing wire directly to the output terminal.
What should the temperature of an alternator be at idle?
If you have an alternator rated at 100 amp at idle, its normal operating temperature is probably capable of only around 75 to 80 amps. That’s something to think about if your twin electric fans and other electrical devices combine to pull more than 70 amps.
When did alternators replace generators in early Chevys?
Among the most overlooked aspects of swapping late-model engines into early Chevys is upgrading the charging system. It was in the early ’60s when alternators replaced generators. Since then, a landslide of charging system and alternator enhancements have followed.
What kind of regulator does a GM alternator use?
Assuming you want to upgrade, we’ll take a couple of the more common options and run through the wiring variables. The original 1960’s GM alternator employs an external voltage regulator. This alternator (10-DN), uses a flat, two-prong connection at the back of the alternator.
The Number 1 wire on the 10- or 12-SI is connected to the charge warning light on the dash. The Number 2 wire is what is called the voltage sensing wire. When converting from an external voltage regulator to an internal such as the 12-SI, many enthusiasts merely connect the Number 2 voltage sensing wire directly to the output terminal.
What causes an alternator to go over base voltage?
If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.
If you have an alternator rated at 100 amp at idle, its normal operating temperature is probably capable of only around 75 to 80 amps. That’s something to think about if your twin electric fans and other electrical devices combine to pull more than 70 amps.
