<strong>Yahoo Message Number: 67357</strong>Help,<br/><br/>I had the alternator changed yesterday at a local truck shop and today during their test drive the voltage was acting strange. At idle 14.0V, but at higher RPM the voltage went down to 12v and the low voltage light came on. I have new AGM 8D batteries installed.<br/><br/>Items changed:<br/><br/>New alternator not rebuilt, new belts, new belt tensioner....