Humpalot, I think it is a ground wire also. There is ground wire already on the door, which is what threw me off. This wire looks too short to reach the door, so I thought it should go somewhere inside the machine, but did not want to touch anything.

NUG- Which one is the sound board. (pardon my ignorance, this is all too technical for my liking. Truth be known, I see all these wires and freak out lol, yet I used to work on Pc's and home theatres lol.