Upgrade you turn light? And no LED option?
Buy a new flasher!
Flasher go weak long before they go dead. You flasher is likely original flasher in the car. In Fiero, that means 20-25 years.
Better yet... Buy a electronic unit. Unlike thermal flashers, this runs faster and load doesn't matter. (1-10 bulb) Also... Blow a light bulb and the rest still work. One gotcha... Check your bulbs more often.
Electro-mechanical unit.
Tridon EL12 Standard noise
Tridon LF12 Loud noise (Yes, they are Loud. Think UPS trunk.)
Both appox $10
Tridon LL552, Bulb Load 1-6 lamp, appox $7. Do Not use for hazard circuit!
What about the hazard flasher?
If you want it... use part # above. Hazard flashers usually doesn't wear out. (It doesn't get use like turn signal.)
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave (It's also at the top of every forum page...)