2002 Drivers door panel switches cut out.

Just bought an AWD 02 S60. I love the car, but the drivers door panel switches do not work at all most of the time. Get this, I open the door almost all the way and they work! This is consistent and opening the door works every time. Also, the rearview mirror seatbelt light works from time to time.

So, my first inclination is to take the door panel off and begin my search for some type of loose connection. Before I do that, does anyone have an idea what it could be?

Also, I hate the headlights. They must go. The only ideas I have seen is to pay out the ear for 05+ lights and retrofit. Are there any other options?

Oh my goodness, the replies are overwhelming.