I have a 1984 300d turbodiesel that has a problem. The hazard lights and turn signals do not want to work at all. I have checked the fuse and it seems like everything is okay regarding that, because everything else that uses that fuse is working tachometer etc. Does it seem like it it might be the relay for both. Please someone tell me the proper steps to diagnose the problem. I have the electrical schematics for that part of the car, but I dont know how to see if it is the relay. Thank you for the help.