My problem is when I open either front door the courtesy lights turn on under dash area, but not overhead domelight or map lights (I'm not even sure if map lights should turn on...as it's never worked since I had car). When either rear door is opened, the rear courtesy lights located under front seats light, but still no domelight.

It's not the bulb as when I use the switch to turn it on by hand, it works!

As for problems with map lights, I've had them fail to work when driving every once in awhile, but it's only been a handful of times.