DODGE Technical Service Bulletins for P2503 code 2006 DODGE RAM 2500 ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR 2006 DODGE RAM 2500 DIGITAL INSTRUMENT PANEL 2006 DODGE RAM 3500 ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR 2006 DODGE RAM 3500 DIGITAL INSTRUMENT PANEL 2007 DODGE RAM 2500 ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR 2007