alt

[Don Dulmage <big-d@xxxxxxxxxxxx>]

Why would you expect the feld terminal to be the same as battery. It controls alternator output by dropping field input. 
Here is the one and only ay to test an altenator reg set up. Hook the vltmeter to the battery terminal. Start the car . Run at approx 1500 RPM voltage should rise to regulator point. Early mopars are 13.2 later are higher. (13.8, 14.2 15 etc. Should never exced 16 volts. ever. 
and15 .2 would be about the upper normal area. 
If you want to know if the alternator is working if the regulartor is not . unhook the reglator terminal and on the alternator and supply battery votage directly. I clip it over from the alt terminal. . Ths is called full fielding and lets the alternaltor run full tilt. it is ok for a short test and is used to tell if the alternator is functioning in the case where it is nbot charging and the regulator is suspect. . This is for single field wire alternators. for double wire alternators when you unpug the regulator terminals you must ground one terminal and feedthe other. to do this. It doesnt matter which one of the regulator terminal you make ground. It doesnt care. 
Short of that put the meter away ofif these test are good. They are all that matters. 
Don  
Author of
Return to Deutschland (True Adventure)
Old Reliable (Mopar)
http://altonapublicschool.faithweb.com/

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