its a wire that lights up the (radio lighting). Cut the ground wire or disconect the radio, replace the marker light fuse which is under the hood on the right side just behind the right head light. Its a black box, remove the cover and it should be the top 10amp (red) fuse. It should have a sticker guiding you to correct fuse for marker lights. Turn on lights, if lights remain on, its the wrong ground wire used to ground the radio.
