So My central locking system went completely out shortly after installing an alarm. I replaced the Central Locking unit and still no luck. I then attempted to remove the wiring harness from the driver door but I can't seem to get it out and I'm afraid to tear the wires out. Here is what I found, there is slightly small amount of green corrosion around the wires connecting to the wiring harness. It also appears someone else has fixed it before since two wires have been cut from the harness and then extended with more wiring which lead straight to the Central Locking unit. Then I found a gray/green wire coming out of the back of the door wiring harness leading into the speaker panel, it also has been extended for rewiring but it was connected to absolutely nothing. Does anyone know what the function of the gray/green wire is or where it should be connected. There does not seem to be any wires missing from wiring harnesses connected to the Central Locking unit but I was not able to find a picture to confirm. Does anyone know where this gray/green wire is supposed to connect to and if that is the culprit of my problem? Any advice on my issue would be extremely helpful. Thanks!