Dash lights; on for running lights, off for headlights...

So I cannot seem to find this issue or a fix that might work for me.
My dash lights light up when the switch is set to running lights, but the lights turn off when I put the headlights on. So when I need them, I do not have them.
I have checked the fuse, which is okay.
The wiring looks good, but did not check continuity.
I am going to clean the combination switch following the DIY, because everything else works, headlights come on, tail lights work, but the instrument lights turn on for the first click and off with the second/headlights.
My dash lights light up when the switch is set to running lights, but the lights turn off when I put the headlights on. So when I need them, I do not have them.
I have checked the fuse, which is okay.
The wiring looks good, but did not check continuity.
I am going to clean the combination switch following the DIY, because everything else works, headlights come on, tail lights work, but the instrument lights turn on for the first click and off with the second/headlights.