Odd whine

Hope someone can help.

I've just started noticing what seems to be an electrical whine in my S-10. Turned off the radio, and that seems to have no effect. First few days it was intermitten, but seems to have gotten worse.

This morning on the way to work, noticed that the dash lights (odometer, etc.) was flickering slightly until the atuo headlights shut off.

Any suggestions?

Thanks...

Have your alternator output checked and also check to see if all grounds are tight and clear for your battery and engine.

Thanks...I'll get that checked.

thanks i was having a humming sound in my 91 over top of the door rattle from the no door panel

More of a light light sqeal if it is the alternator.