When I start my rig (2005), I have noticed the voltage gauge hangs a bit low (around 12) then, after a few minutes, it moves right up around the 14 volt area and stays there all the time. I can't say I honestly remember if this is something new or not, and I do know the alternator is controlled by the ECM, and I do know the grid heater cycles often....anyone else's rig do this when started?? Thanks

 

its normal, its the grid heaters doing that, the colder it gets, the more it will do it...

 

Thanks, just wanted to be sure....