[~The Jester~]

Simple fix. You have a broken/cut wire in the harness between the door and the body. Kind of a pain, but take the harness from the door to the body apart, and check the wires. Just from years of opening/closing the door, the wires work themselves back and forth, back and forth. Not a big deal, just kind of a pain to get in there is all, not much room to work.

Good Luck!