When I am at WOT around 4,500 to 5,500 RPM's my trucks electrical system seems to bog down.
The headlights get dim, the gauges get dim.
My battery meter thingamajig goes down and the red battery flashes near the RPM's.

Any clue?
Josh

 

alternator will soon be crappin out on you, mine just died about a month ago with about 110k on it.


mike

 

Yep, your alternator is unable to provide the required power, so it's coming for your battery...which can't provide proper amperage.