When I flick the directional signal switch on my 1983 380sl they don't work including the green ones on the dash but the same lights work when the emergency flashers are on.Can you buy a kit to fix the inside switch in the steering colum?Fuses are OK .Any idea what I need to fix the problem?There is only one flasher that runs the hazzards and the directionals according to the wireing diagram and all hazzard lights work and flash fine.