Alternator/generator/regulator problems of the 2005 Mercedes Benz C230

On a way from road trip I was driving ( night drive) my headlights went out in middle of driving. I pull on side of the road to see what is going on and then I saw smoke poring out of my driver side fog light and passenger headlight . Open the hood and saw what I really did not wanted to see a fire. I just wana say big thanks for semitruck driver who was so nice to stop with his rig and try to help me with fire extinguisher. When fire was out I pull the bulb out and plastic bulb socket the hold the bulb was gone melted. Im not talking about the plastic part that is on bulb is a plastic part that is coming from the car electrical wire that plugs in to the bulb. Same thing was with fog light bulb all melted to the point where there is no plastic for bulb socket. After couple minutes semitruck driver told me to follow him to first restarea stop so I can be safe not standing on middle of the road. When I restart the car and turn my headlights on only one light was working. Finally after couple miles of driving with one headlight and following the semitruck driver we came to first rest area stop. After looking for couple minutes semitruck driver gave me electrical tape to cover the wires so that fire dose not start again. Maybe is hard to believe but I have photos that I can send it . I know there is a mercedes forum on internet about this people having this same problem. Like I said I have photos that I can send it if you guys thing is a made up story. And worst thing is next to the headlight is a fuel pressure regulator so I don't feel safe or driving any more. This is not the first time that this happened I been going thru 20 bulbs for my brake lights tail lights and headlights. But now im thinking is not the bulbs that r bad is the electrical issue with the car.

In sept 2008 I purchased a certified pre-owned Mercedes Benz C230 sedan along with an extended warranty for an additional expense the car had approx 32k on it at time of purchase, it now is at aprrox 62k all service actions have been performed by the local mb dealership and the car only has the oem equipment it was manufactured with. On the 28th of oct 2010 I had returned to work parked the car and about 15 mins after it was shut off I was summoned by a coworker that my car was on fire, I immediately opened the hood, extinguished the fire and disconnected the cars battery as having a mechanical background in both automotive & aviation. I notified my insurance company to have the car taken to the dealer for assessment of the problem, I was called the morning of Nov 2, 2010 by the dealerships service dept that my claim adjuster had arrived and was asked to authorize tear down of the car and that it had appeared that the cars alternator wire harness had come into contact with the cars exhaust manifold which led to the problem and was told by the dealership and my insurance company that this was classified as normal wear and tear in which I am in total disagreement with especially since mercedes of albuquerque has performed all maintenance since the time of purchase. This now is being put on me for the expenses. In my past 25 years experience have never heard of an electrical failure of this nature with a well maintained vehicle. Updated 12/07/10.