How do I change the keyless entry code on my 1992 towncar

SOURCE: Need computer location in 2005 lincoln towncar

The code is on a paper label attached to a large plastic box containing several wiring harnesses behind the driver side door panel. Posts about it being on the trunk hinge arms, behind trunk panels, on computer module, behind the fuse box, and 'you have to go to the dealer' are incorrect for this series of Town Cars. After you remove the panel (you do not need to disconnect any wires), you will see the box up near the rear view mirror. An example code (3/4) (1/2) (5/6) (9/0) (1/2). If you press the keypad buttons in this order,left to right, the door locks will operate in the manner described in your opwner's manual.

Do a search on door panel removal to learn how to remove the panel. There are some good posts on this topic - some even have pictures.

SOURCE: I HAVE A 1992 LINCOLN TOWNCAR HAD IT FOR 8 YRS AND

You can't override/change the keypad code without knowing the original code 1st. Lincoln usually puts the code # on a sticker inside the trunk lid. I've had 3 and all three had the sticker. Open the truck and check just under the lip for the sticker. Apart from getting the code that way, I'm afraid the only other way is to go to the dealer and have them look it up according to the VIN#.