Try looking for a sticker on the hinge of your trunk. Look under the dash to the left of the steering column. The factory often places the sticker there. You'll have to get on your back and slide under to see it. There is a compartment in the trunk, drivers side, in there you will fink a box labeled remote keyless entry, most have a sticker with the code on it.
There is a sticker on the inside of the trunk on the trunk hinge.
You have to remove the inside door panel to get access to the door handle nuts.
http://www.markviii.org/LOD2/blend_door_repair.htm
No
Either the key pad on the drivers' door, the remote, or use the key.
I don't think so.
go to markviii.org. they have a answer for almost anything with the lincoln mark viii
inside the trunk. look for a little door on the left side i beleive.
in the panel located on side of dashboard open drivers door to see it
Sounds like the outside door linkage either came off or is broken.
Where to find the horn relay fuse for a 93 Lincoln Mark VIII
no