I am thinking of switching to LED landing and taxi lights. If I do, I'll need 2 more wires in each wing... so this is the time to do it. What would have been a super simple task 3 weeks ago, was a nightmare today. 2 different times, the wires I was pulling came lose and I needed to pull a new string and wire. (I was trying a system I had read about. Using shrink tubing to clamp the wires you are pulling onto the wire doing the pulling. It didn't work very well for me.l)