Sorry for two questions in as many days!

I have an issue on my 02 GC where the window controls don't work when the driver's door is open. I searched around when I first got the car and read about an earth wire that commonly snaps in the door shut. Not a problem I thought; I'll put up with it.
However I also have an annoying thing where the interior lights don't go off when I lock the car. They stay on for ~15 mins afterwards. It's fine in the day time, but when I leave it parked up on my drive it attracts attention from people walking past. I have to remember to switch them off on the stalk which I often forget.
Does anyone know whether the common fault also causes this symptom?
Thanks, Chris