Disconnect the battery for about 1/2 an hour and re connect.
Not sure how to reset but there is a switch in the trunk on drivers side.
A Lincoln Mark VII (84-87) models with the 5.0 engine used the same setup as the 87-93 Ford Mustang with the computer "brain" in the passenger side kick panel. To reset it, you just disconnect the negative battery cable, and leave it disconnected for a long enough time to allow the brain to completely loose all juice (about an hour). If you have not corrected the problem, the check engine light comes right back on.
Inside the trunk drivers side open the door on the side and use the on off button.
Disconnect the battery for a few minutes and then connect, resets other things too.
4r70W.
Yes
They have the 4R70W transmission.
No
Where to find the horn relay fuse for a 93 Lincoln Mark VIII
Yes
A/C or Heater? Be more specific.
NO