I had a wire one time that was loose. When the vehicle was not moving the lights worked fine. When the vehicle started to move the wind would move the wire so that it would not work.
Also, one time a cop pulled me over in a rural area. He said I was weaving across the center line. After he left my friend with me from Ukraine asked me why he said I was weaving when I wasn't. I told him that they can't pull you over in the U.S. without a reason. He may have wanted to find out who I was because I had out of state plates on my vehicle. Also maybe not weaving like a drunk but maybe I did accidentally cross the center line of was on it without realing it.
