2012 YAMAHA XV1900 Exterior Lighting Problems

BIKE BOUGHT DEC. 2013. 1 YR. WARRANTY PLUS BOUGHT 4YR. Y.E.S. EXTENDED SERVICE COMPREHENSIVE WARRANTY THROUGH 10/31/2018. AT APPROX. END 2017, THE REAR LEFT HAND SIGNAL FLASHER STALK BEGAN TO VIBRATE LOOSE TO THE POINT OF BEING FLOPPY AND RISKING FALLING OFF ENTIRELY. THIS BUILT-IN STALK IS NOT ACCESSIBLE TO TIGHTEN WITHOUT DEALER DROPPING REAR WHEEL, REMOVING REAR LED BRAKE LIGHT ASSEMBLY, AND TIGHTENING BOLTS FROM INSIDE THE NOW ACCESSIBLE FENDER. IT IS NOT JUST A "MAINTENANCE ITEM" AS YES STAFF CLAIMED WHEN PRESENTED FOR WARRANTY CLAIM. TURN SIGNALS ON BIKES ARE KEY SAFETY FEATURES, AND AS ON CARS, ARE NOT SUPPOSED TO JUST VIBRATE OFF UNDER WARRANTY. INDEED, UNLIKE A MIRROR WHICH CAN BE TIGHTENED EASILY BY A WRENCH, SUCH DISMANTLING REQUIRED IS A DEFECT IN MANUFACTURING. HARLEYS, CARS, DON'T HAVE HEADLIGHTS OR BRAKE/TURN LIGHTS FALLING OFF AND UNBOLTING DURING A 5YR. WARRANTY PERIOD, IF EVER ! OWNER CONTACTED...