Only connect them together if you want to blow your accessory fuse. They are your rear accessory leads.
Really?
Did you look at the FSM to find that, or are you guessing?
Don't hook anything to those wires, they are used to invoke diagnostics.
If those wires were sticking up there without you removing the ecu box, and fishing them up, that's what they are.
To get to the actual accessory leads back there, they are buried underneath the box, it must be removed, and the acc leads fished up and around to get them in a usable spot. They are Black (solid color) and Black/Yel stripe (again, solid color...)
if anything has gray dots there it is part of the diagnostics... I think....