Problem with dash lights

I'm having a problem with my dash lights. The shift light, daytime running light, etc. are working, but the speedometer isn't. When I turn off the car and the headlights are on I also don't get the "beeping" to warn you that you left them on. Before the speedometer light totally went out, it would work only on the highest setting, and would not dim. Does anyone have a suggestion on how to fix this?

its your dimmer, i had the same problem with my 2002 unfortunately, 15$ at a scrap yard