Front interior lights go on and off with door shut/auto door closers started working?

[86560SEL]

Well some may know of my car starting problems, well the car starts now and runs fine.

I was about to wash the car and I noticed the front overhead interior lights on, then they went off... then I got the hose and looked again and they were on! I stood there and they kept going on and off. When I would lock the doors, they would go off and stay off, but if the doors were unlocked, the interior lights would go on and off. What gives? I imagine that this is what ran my battery down. I am guessing a faulty door interior light switch?

Lastly, the "automatic door closers" had never worked since I have owned the car, but today I closed the trunk and it pulled down on its own! I tried and doors and they work too! What in the world is going on with these? lol.

The MB tech I talked to about the car said they had not worked for years and it was going to be $$$$ to repair, so the owner never bothered with them, now suddenly they work fine.

I thought the interior light deal may be where the auto closer was not closing the door tight, but I closed them tight without the closer doing it and the interior lights still came on and off.

Any help appreciated! The car is a '93 W140.