Did you check the turn signal relay? I'm not sure if when you say "other electric components", that this includes the turn signal relay. It sounds like that is what needs replacing.
when you turn signal on ,do you hear a click in steering column ? There is a lumen or circular device inside the steering column that turns on directionals.If it is working ,you will hear a click.
check sockets for bulbs .Sometimes sockets are bad or rusted and corroded.
this car may have separate flashers for the turn signals and the emergency flashers
when the vehicle has a breakdown
It has 2 different flashers. One for the turn signals and one for the emergency flashers.
They do not.
Push the flasher button. It will have a triangle symbol on it.Push the flasher button. It will have a triangle symbol on it.
There are two relays, one for the emergency flashers, and one for the turn signals. Your turn signal flasher is defective and needs replacing.
in middle of dash large square button with red triangles push it and you will activate your flashers
check the flasher itself and the switch
The Fiero has two flashers from the factory, the signal light flasher and the emergency or four way flasher. These are identical GM style two prong flashers. There are many quality levels and even a few novelty flashers available.
Faulty hazard switch.
you need to replace blinker can in your vehicle. the flashers and blinkers have separate flasher cans which is why your flashers still work but not your blinkers
It is normal for the emergency flashers to work with key on or off. You need to shut the e-flashers off with the e-flasher switch.