Finished installingLeft tip light mount plate and lense. This lense was near perfect fit; I just smoothed the edges.
Installed nut plates.
I decided to add a siren to each wingtip. A mount was made and installed. The sirens are 120 db oscillators and only use about 180 ma each. They weigh about 2 ounces. A small pice of 063 x 3/4 angle was used for a mount and fabricated using standard techniques.