I tend to like about 5 feet of cable. If you get it too long, you are stepping on it and pull it out. Too short, and you have to stand right on top of each other. I think the futaba had 6 pins but don't remember right now. Yours will probably be different. Some radios require you to plug it in a certain way. Make sure yours is not one of those. Other than that, it shouldnt be that hard.