Why did my 1972 ford stop charging? The alternator was rebuilt last year and I replaced the voltage regulator and it still doesn’t charge.

 

Parts sometimes fail regardless if they are new.

It's a old truck with old(er) technology.... it's not a friggin' toaster.

 

My grandma has a pre war (WWII) toaster....it can electrocute a small child....... but it makes a mean piece of toast.

 

Do you have access to a voltmeter? If so check for 13+volts coming off the regulator with the engine running. You may need to rev the engine a bit to get the voltage up. A good place to take the reading is at the starter solenoid.

If you get low/no voltage from the regulator, check it right at the alternator.

Also, make sure the belt is tight.