Wing tips. I installed the aeroled's abd the lens for each wingtip per the plans. I am using the sunspot AeroLeds that vans sells. Works great, easy plans to follow and I'm very happy with them. I then went onto the wingtips where I had to install a ton of nutplates and since I am using the Bob Archer wingtip Antenna I figured that I should install that now since it will go under the nutplates. All in all this was a fairly uneventful task and now I'm basically done with the wings. The Quickbuild option saved me a ton of time which is perfect since my finish kit is now here sitting in my garage.