My 1987 Goldwing Interstate has inoperative turn signal flashers. When either one is selected the light comes on but does not flash. Hazard flashers work OK. I also hear what sounds like a buzzing noise just behind the battery and under the seat when the turn signal is engaged. Read where it could be the auto cancel being unplugged or a bad flasher relay. If so where are they located and how do you get to them. Any suggestions. Posted by TOS.