Small electric problems
 

The door switch for the front dome light doesn't work properly anymore, if I wickel it the dome light will go on; my question is how do I get the switch out to replace it, it looks like it is permanent?

My cigaret lighter is not working anymore, I disassembled it and I found out that there are no wires attached to it, but I can't find them either, does anyone know what I have to look for or where I can connect a new wire?

Thanks.

I'm assuming you have a W123 M-B.
The light switch pops out very easily. You have to replace the whole assembly, there's no fixing it.
Your lighter wont have any wires. Pull out your ashtray, unsrew the metal bracket behind it and look for a plug. It plugs into the bracket. It got disconnected on you some how. Its there somewhere.
BTW, you don't need to smoke in your car, diesel fumes should be enough.:)