my gauge goes up and down and my lights dime and brighten while at idol my truck is new only 5000 miles is there a charging problem or is this the norm or is this the sign of a bad batt

 

The Draw is your Intake Heaters Working , its perfectly normal
DM

 

Yup, every CTD does it. No big deal. Its not going to hurt anything.
Scott

 

thanks guys I will relax on that

 

you'll notice that once the truck is warm or has exceeded the speed of 15-25mph it'll stop doing it. try driving once started and it is doing it and you'll watch it cycle till you hit those speeds and then it'll quit...

 

glad someone posted this i was about to ask the same question

 

You can tell its getting cool, had to wait for the light to go out today to start her.