Interior lights will not go off

Thank you for this post I found the door ajar switch for the drivers door was off so I fixed it problem gone I love this site.

Background:
Feb, 2015, I noticed I had no brake lights. I trouble shot the situation, and discovered that the electrical harness had melted where it connects to the brake light switch. I replaced the switch, and repaired the harness with a couple of spade connectors. The brake lights still wouldn't work if the switch was installed in the car, but I noticed that it would actuate the lights if operated by hand. I added a.050" shim to the surface of the switch actuator, and all work as advertised, problem disappeared.
Fast Forward 8 months:
I was leaving work and found I had a dead battery. Upon trouble shooting the cause, I discovered that the brake lights would not extinguish. I immediately remembered the shim that I had installed on the switch, and removed it. The brake lights went off, and still wouldn't work without it. I again noticed that the wiring to the switch had gotten hot and melted some of the insulation, so I replaced the switch again, and also bought an aftermarket connector to splice in. I did the work, and, with the new switch, the brake lights worked as they should, however, now the headlights came on as soon as the electric circuit was energized, and stayed on regardless of the time of day or the position of the lisht switch on the dash. In addition to the exterior lights having a mind of their own, I noticed I had no interior lights (courtesy lights), and I also noticed smell as thought the wiring was getting hot inside the car.
At this point I removed the terminals from the battery, and have been chasing the problem online ever since.
Please HELP.

Thanks for taking the time to reply. I'll do just that. I think I have a much more elusive problem than that, but that seems like a good starting point.

So I was trying to put new lights, but I missed up I cut both wires while the light was on and then all the interior lights turned off, I put the light back it didn't work, now none of the lights work. Every single light inside is not working, doors lights, foot lights, glove compartment light, etc.
I would like to know what's the problem and how to fix it.

So in other words I should replace the fuses for the lights or what?

Thank you so much I actully found the fuse, changes it and then the lights worked, glad I found yall

1992 Lincoln Town Car: V8.
My problem is that when I turn off the car and close the doors. The inside lights will not turn off. This inludes the clock, the lights by your feet, the glowing keyhole and the lights on the ceiling. Because of this it is draining my battery and my car will not start. At first I thought my battery was bad but I got it tested and it came out ok thus it can hold a charge.

Hello, every time I turn the car on and leave the door open or turn on the lights for night driving, the interior lights start flashing slightly and only stop when I accelerated the car and I do not know what they may be. Could the voltage regulator is causing this problem?

The interior lights would not go off when the car was off and the doors were shut so the battery wore down. Could this be a fuse? My husband passed away and I'm now TRYING to be the mechanic!