fuse box under steering wheel
The stock amp in a 1990 Mercury Grand Marquis is in the dash behind the radio.
The factory radio on a 1987 Mercury Grand Marquis is made to play local radio states and cassette tapes. It is connected to a high fidelity sound system.
read the instructions manual.
Put in radio station and hit the set button
remove radio from a grand marquis 2003
Sounds like receiver ok, check the speakers/fuses.
Hey Nicole==TAke the knobs off and remove the nuts under them then get under the dash and remove the wiring and any nuts holding the rear of the radio. GoodluckJoe
check fuse
You can buy a FORD radio removal kit at some auto supply stores.
Start by checking all your fuses under the hood and under the dash.
It is brown.
check the fuses...also You should be able to find a shop manual at your local library with the right info...make copies as they are usually only in the REFERENCE section....good luck:)