could be the alternator is about to go out
There should be a roll switch right next to your light switch on your dash to dim the lights with.
I have a 1983 GMC Sierra it has no dash,tail lights an brake lights are very dim
I also wanted to do this. Apprently not, you can change the settings in the menu (on the radio display) but only to daylight (bright) or automatic (dims when lights are on) not any good for the drive in's...
If you know where to change the odometer/tripmeter display... Instead of pushing that control, turn it counter-/clockwise to dim/brighten the dash lights.
dial right hand side of the steering wheel
because it is using up lots of power :)
You turn the trip odometer button on the dash.
have your battery and alternator checked but first check to see if switch for your dash lights are just turned to dim
Most dash lights have a setting knob to turn the dash lights on and off and to dim them, maybe this switch is off.
The dash lights will dim when the head lights come on. Check for a dimmer switch on your dash. It allows you to adjust the dash lights so they are not too bright and affect your nighttime vision. It may be set too low.
You could have a blown fuse, these lights may also have a knob to dim them make sure this is on.