I've Grip Lock tied them in place and will snip the tails off when I'm sure no changes will need to be done. The Grip Lock Ties are really neat, basically a zip tie but with rubber to grip on the inside and they are also releasable so they can be reused or adjusted.
I still have to figure out the transition from the wing to the fuse. I need some slack so I can fold the wings. I also am considering some sort of connector in case I ever need to remove the wings in the future, like to cover them!
The wires all dump out underneath the front floorboard. and will go to the firewall and up, then back to all the avionics.