I don't know if this has any merit, as I go straight past questions when I see stuff like BEP in them. When you say turn relay I think you might mean horn relay. Is it the top, right hand side relay that buzzes? That's the horn relay. Replace the fuses anyway. Clean the earth connection at the rear of your brick, the tail light and indicators at the rear depend on it. That might do it. While you have the light out, clean all the connections there.