Flasher

You actually do not have a flasher relay. Your flasher is integral to the lighting control module.

If the flashers are not working then we need to check the output from the control module when the switch is on.

https://www.2carpros.com/articles/how-to-check-wiring

I am attaching the info below on this including the wiring diagrams. Please run through this and let us know what you find.

If you have no voltage from the LCM then we need to replace it.

Brakes problem
1997 Mercury Marquis 112000 miles
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where is the flasher located 1997 grand marquis

Right rear of the trunk.

Where Is The Turn Signal Flasher when it is not in the fuse box under the left side of the dash on a 1996 Mercury Grand Marquis?

The Turn Signal Flasher output is provided by the Lighting Control Module, which is located behind the LH side of the instrument panel. There are no separate relays for Turn Signal Flasher output aside from the LCM.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

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