I have a 1987 Mustang that the turn signals went out on me over the weekend. I still have the hazards but when I use either turn signal, left or right, I get nothing outside or inside. I don't have the dash turn signal or the outside front or rear turn signals. I've checked the fuse and it is good. When I did a quick Google search on it, found a couple articles talking about could be a relay and not necessarily the switch ? Not sure where the relay even is - any suggestions on what my elimination steps should be to get to the problem ? Thanks