What would cause one side of the navigation button panel backlighting to go out? The buttons that are on the drivers side of the nav that control the driver AC no longer have backlighting at night. All of the rest work. It happened somehow during a Bluetooth install. I asked the tech that installed it to check fuses and he said none were blown. I had already replaced one fuse for my cigarette lighters that was blown by this. He thinks it’s a bulb and he’s willing to replace it once e figures out what to order. I was hoping someone on here may have an idea what is causing this. Any suggestions?