i believe that the Hazard Flasher Unit for a 1998 Mercury Grand Marquis is behind the left side of the instrument panel
The fuse block you are looking for should be behind the knee bolster (the trim panel under the steering column), between the steering column and the emergency brake lever, underneath the dash.
Lay on your back with your legs hanging out of the driver's side door, put your head against the brake pedal, and look up and to the right. ;)
I don't remember right off the top of my head if there are separate flashers for the turn signals and the hazard lights, but they should look almost identical. Round, silver or blue or black, and about the size of a half-dollar.
TIP: If you are replacing the flasher, go with the upgraded electrical flasher (or the heavy duty) rather than the standard one.
On a 1998 Mercury Grand Marquis : In the fuse panel under the dash : ( # 16 is a 20 amp fuse for the cigarette lighter and emergency flasher relay )
what is a fire order for 1998 mercury grand marquis
The button for the hazard lights is on top of the steering wheel column , the switch is part of the multi-function switch inside the steering column cover
It's a car.
In a 1998 Mercury Grand Marquis ( fuse # 16 is a 20 amp fuse for the cigarette lighter and emergency flasher relay ) in the fuse box below and to the left of the steering wheel , by the brake pedal ( it has a cover on it )
Should just unplug
it is attached to the stater
On a 1998 Mercury Grand Marquis : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
At the front of the engine , towards the drivers side of the engine ( power steering fluid reservoir on a 1998 Mercury Grand Marquis )
According to the 1998 Mercury Grand Marquis Owner Guide : ( 71.9 litres / 19.0 U.S. gallons )
change your hazard/flasher switch pretty much just your hazard button
connected to the turn signal