First, check all of the bulbs. If one of the blinker bulbs in burnt out it will cause it not to blink on the side where the bulb is located.
You have a defective Flasher Relay. Located behind left side of instrument panel.
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connected to the turn signal
On a 1996 Mercury Grand Marquis the windshield washer squirter button is on the end of the turn signal lever
assuming you mean the light bulbs, see the answer to "how do you change turn signal lamps both front and rear on a 96 mercury grand marquis" right here in WikiAnswers.
Mercury Grand Marquis was created in 1983.
Under dash, driver's side.
Replace the flasher relay if none of them are working.
.054 is the gap for the Mercury Grand Marquis.
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No , the last model year for the Mercury Grand Marquis was the 2011 model
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