2004 peterbuilt

This topic contains 3 replies and was last updated by darwin 11 years ago
September 16th, 2010 7:58pm
i have a 2004 peterbilt with electrical problems. with the key switch on the volt gauge will drop when u turn on any component in the cab and will fluctuate back and forth when the turning signal is on. does any one have some ideas?
September 17th, 2010 4:44am
Is the truck running when this is happening?
September 17th, 2010 8:16am
It's a matter of degree.

It's normal for the volt meter to fluctuate when a load is applied. Is this what is happening?

If the volt meter is fluctuating violently downward when a load is applied, it often indicates high resistance connection, some corrosion forming at a ground strap, dirty battery cables or something similar. Conduct voltage drop test on the electrical system.
January 30th, 2011 2:32am
If you have a load that is pulling your volt gauge alot first i would check the gauge. I used to own a pete and the biggest fuse in that truck was 30 amp. Little tid bit of info if your amp meter dont work in the dash look down by the starter you will find 2 inline fuses 90% chance that will fix the amp meter

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