Flickering dashboard & interior light

Sometimes nowadays on instruments there is either a thin plastic flexible PCB, these tend to vibrate and break the traces. Or maybe there's an actual PCB board these tend to break also, the bad part is if the vehicle is old enough these PCBs are no longer made, time to look in the junkyards. Maybe the bulbs are bad or have a bad connection, faulty wiring , maybe dirty connections. I have an old VW console the flexible PCB one trace was broken so nothing worked on the speedometer console. These flexible PCB's cannot even be jumpered with wire, the darn solder won't stick and you melt the plastic so I know how frustrating this can be. If the Console is bad try Ebay you can find car parts there, if you're into EBay , good luck.