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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
my voltage guage will surge below the medium when heater is on.....and when the heater is off or rev engine the guage goes back to normal. still the stock one so Im guessn so