Electrical Issue?

[WarEagleDiesel]

I have noticed that, periodically, my headlights (if on) will dim, dome lights (if on) will dim, dashboard illumination will dim, a/c or heater fan will slow, etc. , simultaneously, and only for a short period of time, on my ’09, 6. 7 equipped Ram (fully stock). This will happen in cold or warm weather, engine cold or hot, while idling or driving, towing or not. I do not notice a decrease in engine power when this occurs while driving, and the speaker volume is not be affected. I have not been able to establish a pattern to this occurrence, and, (I think) it has been happening since I bought the truck (new) in December ’08, just thought it might be an idiosyncrasy to the operation of a diesel powered truck. But a buddy questioned me on it, so now I am concerned. Questions below.



Is this normal?

Has anyone else been experiencing this?

Can anyone suggest why this occurs?

Anything I should check (i. e. alternator current output, loads pulled by certain equipment/components, etc. )?

Could it be that I do not have a large enough fuse installed somewhere?



Any input would be helpful. Thanks.

 

[EStarns]

It sounds like your grid and fuel heaters are kicking in. Normally it only last for a few minutes after startup but on really cold days I have noticed it can last a lot longer. So unless this is happening after about ten minutes of driving your truck sounds completely normal.



2007. 5 Inferno Red Quad cab Long bed. 53K now.