Regarding bed lights for existing factory installed lights......Are there bulb or light upgrades out there that are a direct swap? Also, is there a "kit" of lights that you could install that tap into the existing lights that would go on and off in sync with the factory installed lights? Wouldn't mind doing both if there are direct kits/parts to do so. I couldn't find any existing threads or you-tube videos. I have found aftermarket light kits but nothing that taps into existing lights to run in sync.