Trunk Wiring problems of the 2002 BMW 330

Dash indicated taillight was out when it wasn't, this was random on and off for a few months. After a few months the dash panel indicator light stayed on. As I was driving one day I noticed the smell of smoke coming from the trunk. I stopped, and noticed the melted wires from the tail light harness. As I looked at them I could see them sparking when certain movements occurred. , very dangerously and erratic. Both male and female sides melted. I have noticed the other side was beginning to have the same symptoms, random indications of a tail light out when there was none. This was brought to the dealerships attention , savage BMW, as well as Bmwna. I brought up the fact that it was a common problem that should be looked into, and they refused to cover it, and didnt take much concern into the matter. They were e charging me $400+ to fix just the one side.