I just ordered a new JAMMA harness and it came in and I was examining to prep for a cab build I'm going to be attempting soon. I noticed the video ground pin wasnt wired up to anything on the new harness and wondered if that is normal? All the video connections for superguns and games I've done in the past had used a video ground wire. I did some reading and some people said to just tie that pin to common ground. Can someone elaborate a bit more on this and tell me if I need to add the wire or jumper that pin over to a common ground?