HI...I HAVE AN R REG 1997 DISCO AND I CANNOT GET THE REAR TAIL LIGHTS WORKING...NOT THE ONES LOCATED ON THE BUMPERS THESE ARE FINE...IT'S THE ONES ON THE MAIN LIGHT CLUSTER THAT ARE ALSO THE BRAKE LIGHT...THE BRAKE LIGHTS WORK FINE AS DO ALL OTHER LIGHTS...I'VE REPLACED THE BULBS, AND CHECKED ALL THE FUSES....I'VE WIGGLED THE CONECTORS TO LIGHT CLUSTER AND CHECKED FOR CORROSION....THIS IS DOING MY HEAD IN SO ANY HELP WOULD BE VERY WELCOME.