If there is no music but a loud scratching sound coming out of all the speakers then it is the amplifier. just pull it out to get the model number and buy a used one on ebay.
It's probably the amp, either change it or replace the audio system
Lincoln did not offer a Mark VII in 1993.. Lincoln stopped production in 1992. Then started the Mark VIII in 1993
Yes they will
go to markviii.org. they have a answer for almost anything with the lincoln mark viii
There is no LincolnMark XIII (13). There is however a Lincoln Mark VIII which is a Lincoln Mark 8. If this is what is meant that model car first debuted in 1993.
Bad thermostat?
In the thermostat housing
Under the trunk
Where to find the horn relay fuse for a 93 Lincoln Mark VIII
Yes
ccrm module
To do it correctly the speakers will have to be rewired and a new wiring harness installed.