There should be two different bi metals. I've always called them flashers.
There is one for the emergency lights and one for the turn signals. After
years of use, they wear out. Replacing them is simple. They're round,
maybe 3-4 centimeters diameter and about the same height. One you should
find plugged into the fuse panel (I believe that is the one for the
emergency flashers) and the other one should be held up under the dashboard
by a clip. The case can either be metal or plastic. Considering the age of
your car, they're probably metal.
Go to the auto parts store, ask for two flashers, one for the emergency
flasher and one for the turn signals. When you replace them you should have
no more problems.
I hope this helps.
It should be located under the dash right by your left knee if you were in
the car. It should be along with the fuses. Been a while since I've looked
Is the blink rate constant with the engine off with the key turned to
accessory?? If it is, you may have a bad voltage regulator. 10 dollar part
at the parts store.
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