I installed wing tip lights when I built my RV8 but I think next time I would consider installation of the in wing duck works mounting kit. This kit gives a larger area for installation of landing/wigwag lights and would give you more options. The wing tip lights work fine and if you selected systems fit go with that but something to consider. There is also a mod for installing the wing tips with hinges similar to the Vans cowling installation might think about that...my plane is polished and it would be nice to just zip the tips off whenever polishing.
Flying RV 8
VAF Dues Paid for 2018