Head unit flickers

I've got a little electric gremlin. When the headlights/DRLs are off, parking lights on, the clock and the lights on the radio buttons flicker.

As soon as I turn on the headlights, the flickering stops and the lights work normally. So maybe a ground wire is loose? Where would that be grounded? I don't even know where to begin.

Any help is appreciated. Thanks!

 

That’s an oddity?
Is it only the clock and radio buttons?

Can you get it to stop by fooling with the headlights switch.
Try turning/wiggling the rotation switch and see if you can get it to stop?
Maybe be the switch for the lights?

 

If you have an aftermarket radio, I would try to disconnect the (usually) orange dimmer wire to see if it solves it.