I'm trying to install chrome towing mirrors on my 2015 chevy 2500hd ltz. I need to install new door harnesses, which is easy, but I also need to install a new jumper harness also, part # 23387133. Has anyone installed this jumper harness yet and if so any pictures or video help. I do have instructions to install this part but I wish someone might have how to video or pictures. Thanks.