Your dash light brightness is adjustable when your parking and headlights are on. It sounds to me like you have them adjusted all the way down which is pretty much off.
There should be a small adjustable wheel on the left side of the dash just below the storage pocket next to the drivers door. You can rotate that in an up or down direction and it will adjust the brightness of your interior dash light.
There should be a small adjustable wheel on the left side of the dash just below the storage pocket next to the drivers door. You can rotate that in an up or down direction and it will adjust the brightness of your interior dash light.