http://www.installdr.com/InstallDocs/FLM/Contour.html
Buy the removal tool to take stock radio out, can be ordered online or found in local auto parts store
You need u shape unlock pins they sell them at walmart
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.
On my 99 it is a 7.5 amp and it is found in the Passenger compartment fuse panel...Hope this helps!
You either need a special tool from ford or you can make your own out of coat hanger wire. go to www.carstereohelp.com and click on mercury it will show you exactly how with diagrams.
Ignition switch may be defective.
Tie wraps can be used to replace a stock radio wiring harness in a 1991 Mercury Tracer. The wires can be replaced with other radio wire from an automotive parts store and the tie wrap can hold them together.
get the keys from cructhfield
IF ITS AFTERMARKET:.... REMOVE THE OLD CD-PLAYER/RADIO....GO TO CIRCUIT CITY OR ANY AUDIO STORE AND ASK FOR A HARNESS TO FIT YOUR CD/RADIO PLAYER TO YOUR SPECIFIC VEHICLE.... THEN PLUG AND PLAY THAT SIMPLE...
if it is equipped from factory it is mounted by the rear controls for the radio behind drivers seat
terminal 30 in wiring diag, most likely a red wire
behind the radio hidden up amongst the bundle of wires, it is very difficult to access and replace