There is a short in your body wire. If there are no lights when the weapon is unplugged, but there are lights when the body wire is unplugged from the reel, the body wire is at fault. There is a short in the scoring apparatus. If there are no lights when the fencer unplugs from the reel, this is the problem. It can be isolated by successively unplugging connections to the box.
Wrong lights go off when a touch is made.
The scoring box is on the wrong weapon setting.