Ok put the fuse back in so the test light comes back on and go through process of elimination until the light goes back out. I'd probably pull the dome light bulb since they're easy to get to. If your test light goes out, then you know the draw is most likely coming from the dome light part of the circuit. Your dome light is switched on and off by your door switches. I'm guessing this may be where your problem is. There is a chance that one of your door switches isn't opening and closing contact completely.