From: ivanvegvary@gmail.com   
      
   On Tuesday, May 9, 2023 at 3:45:10 PM UTC-7, Paul in Houston TX wrote:   
   > Ivan Vegvary wrote:    
   > > 1948 Pontiac, 12V battery, one wire alternator (was working when parked 12   
   years ago).    
   > > No amperage reading even at 2000 rpm. Battery voltage 12.6V. Battery   
   voltage with car running 13.8V, however amp meter only reads 0 or negative   
   with headlights on. Placed an after market ammeter between the alternator and   
   the battery. Same reading as    
   ammeter in the dash.    
   > > How could this be? Alternator supplies voltage but no current.    
   > > After idle for 12 years maybe residual magnetism is gone. Needs to be   
   excited. Can't find a YouTube that shows me which terminals to zap.    
   > > All help is appreciated. I can certainly buy a new unit, but possibly have   
   other problems.    
   > >    
   > > Thank you   
   > There must be current... but not a whole lot.    
   > Possible corrosion... some where.    
   > the alternator wire at alt or batt.    
   > alt slip rings corroded.    
   > alt brushes stuck.    
   > internal corrosion at the diode plates.    
   > bad alt ground.   
   Thanks all of you for your thoughtful responses.  Will check and clean all   
   connections.   
      
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