Inside and outside lights

Sounds like either a wrong bulb has been installed somewhere, there is a broken ground wire (usually we see this in the trunk hinge area) or a faulty connection. Have also seen issues in the actual light switch itself. A tech with the proper equipment should be contacted to get to the bottom of this. Start with looking in the trunk/hatch area for the wiring that goes to any lamps back there (if that is the style it is) and, if nothing obvious then take it to a tech.