Tail Light Switch problems of the 2011 Ford Fusion

Tail light melts within its housing while driving.

I had a recall on my car last year 2017. I took it to be fixed. They replaced the throttle body and power steering module. After having that replaced I later notice my car wasn't driving right. There was a whining noise and a noise coming for steering wheel. So I took my car back to have it check out. The guy said it will cost $130. 00 for them to check my car. I asked if cost to check the part they replaced because my car was driving the same since they fixed it. It took less than an hour for them to tell me that there wasn't anything wrong with the parts that was replaced. Now my car has been going down since. So June 30,2018 I took it to a mechanic for oil change and he told me that I should take my car to dealership to get rack and pinion check. He express to me that I should get it looked at soon because my wheel seem like it will lock. August 5,2018 I was driving the express way and almost lost control of my car. It kept swerving back and forward in and out of lane. I was trying to avoid hitting the car on my right side and hitting the brick wall on my left. I to brake on the expressway almost coming to a complete stop to get control of the car. I thank god there wasn't a car behind me. I had to replace the tail light several times. There a static noise coming from the center dash.

I replaced a rear tail light bulb that was not working and found that the socket appeared to have sustained damage from an overheat condition. This caused the new bulb to not fit securely in the socket and not make solid contact. I checked the other tail light and found the same condition. Both sockets were discolored, brown to black near the bulb, apparently from being over heated. Several days later I replaced the right low beam headlight and found that the socket had melted, requiring the socket to be replaced. I don't think the tail light and headlight events are directly related, but I feel that this excessive heat is a potential fire hazard and is indicative of a serious engineering defect with the Fusion. To the best of my knowledge the bulbs I replaced were original and no prior modification or repair has been done to any of the vehicle's lighting. I am not including pictures of the tail light socket at this time because if I attempt to remove them to take a picture there is a strong likelihood they will stop working. I have included pictures of the melted headlight connector.

Burnt tail light sockets some melting as well because the bulb was stuck inside socket.