I still fly it without the wires... with the 4S 4000 or 3S 4000 or whatever other pack I stick in it.
I did have them hooked up briefly.
The wires are totally nonfunctional (useless even if intended to be functional). If you load them with a tight loop and the stock battery you'll pop them or pull the "hard points" out of the fuselage.
Let the wings flex... its fine.