Drilled the backup battery box for the piano hinge halves that will hold it to the fuselage.
Riveted the hinge halves to the box. Positioned the box in the fuselage, drilled, and riveted the associated other halves of the hinge pins.
Bent the piano wire in an L-shape to hold the halves together and installed.
Made up a harness; crimped end terminals on. Rats I just realized I forgot to wire it into the switch that switches the backup battery in and out of the circuit.
