Installed landing light mounting plate in wing bay. Mounted ballast to mounting plate using AN515-8R8 screws, AN960-10 washers, and AN365-832A stop nuts. (Used a longer screw on one corner in order to mount an Adel clamp to hold the wiring harness). Mounted ballast and lightbulb. Put additional tie-wraps on several wires to keep them firmly away from edge of lightening hole. Protected lightbulb with Saran Wrap, then stuffed paper around entire mount to protect it from the subsequent drilling I'll be doing on the Plexiglass cover. To work with the Plexiglass, I'll have to warm up the hangar to ~70 degrees, or wait for warmer weather. Held fiberglass wingtip in position to determine wire length for LED nav light. Drilled and clecoed nav light power converter puck to end rib.