My mark viii will not shut off until i pull the fuse

it is located at side of dash drivers side page 109 of your owners manual starts your fuse information the following link is the owners manual incase yours is unavailable
1998 Lincoln Mark VIII Owner Guide 1st Printing

On this website (link below) you find fuse box diagram and description for Lincoln Mark VIII (1993 - 1998)

Lincoln Mark VIII 1993 1998 fuse box Auto Genius

On this website (link below) you finde fuse box diagram and description for Lincoln Mark VIII (1993 - 1998)

Lincoln Mark VIII 1993 1998 fuse box Auto Genius

On this website (link below) you find fuse box diagram and description for Lincoln Marek VIII (1993 - 1998)

Lincoln Mark VIII 1993 1998 fuse box Auto Genius

Fuse #14 (light green) 30A Cigar Lighter, Cellular Phone, Power Point located in the passenger compartment fuse box.

reostat for the fan is faulty

check the ignition switch and if this be the case it is cheaper to find a salvage yard and have the column same as yours and change the whole thing just take the steering column to a lock smith along with the key and they will rekey it to the new column

Dont know whay the blower motor doesnt work, but that age with these cars (I have two 94 Marks) both have had the turn signal switch replaced for problems with hazards not working, wipers not shutting off, etc.
To check your climate control system: Press OFF and FLOOR at the same time, release, then hit AUTO. That will make it self-test. You will get 888 (ok) or an error code (024, 025, or such)

buy a set of factory manuals used. There is not just one picture.
the fuse box in the driving area is in the owners manual. The engine compartment diagram is in a book called Mark VIII Electrical Vacuum and Troubleshooting Manual.

IN THE FUSE BLOCK UNDER THE DRIVER SIDE DASH LAY ON YOUR BACK AND LOOK UP