Having some electrical problems. Please help

[jeff_z]

Hey, I've got a 97 2500 5.9 gaser. Been having a lot of electrical problems. When I turn my lights on all of my gauges act funny (speedometer jumps, rpms jump,*tempgauge*goes up, etc.) Also without the lights on the gauges will do the same when the a/c is turned on. Anyone else have similar issues.

Thanks

 

[sbarron]

My first guess would be a weak ground. Thats the only thing I can think of thats common. Check your battery to chassis ground, check your ground terminal. Check the ground strap between the cab and the chassis.

 

[jeff_z]

I'm gonna check that out thanks.