What would cause of the interior lights of a 1999 Lincoln continental to go on and off with it just setting in the driveway?

I have had the same problem with a 95 Continental. After taking it to a dealer for repair he told me how to fix the problem myself.

First, check all doors. If a door is not completely closed the interior light will come on.

Second, spray WD40 into each of the doors where the door locking pin engages the opening in the door. Spray all around the door openings on all door and open and close the door 4 or 5 times each.

The problem is that moisture gets inside of the door (poor design) and corrodes the electrical contacts... so the electrical system "thinks" the door is still open and turns on the interior lights. If the problem is really bad the interior lights will come while driving when you stop at a traffic light with the engine in idle and go off when you start moving again.

I found that spraying WD40 each fall before the winter snow and rain prevented the problem from occurring. GOOD LUCK!

Bill