Pac Man monitor.  When I got it, the screen had an all over red hue.  Turns out a wire had come loose from a plug.  It's the blue/black in the pic.  When I connect the blue/black to the empty pin there, the monitor looks beautiful.  But that OTHER wire that is there... hanging... concerns me.  I can't figure out where the heck it goes.  It doesn't seem to go to the edge connector, or the power supply.
Any ideas?  The monitor is a 19k4606