Reviewed and finalized connections to taillights. Installed connectors and connected tail light strobe to strobe power supply. Also connected taillight power and ground lines to terminal strip near strobe power supply.Made battery box componenets. Punched battery box lightening holes. Drilled and clecoed support bracets to battery box. Drilled out firewall for battery box and clecoed battery box to firewall to test fit. Drilled control cable holes in firewall and expanded to proper size, then deburred all holes. Punched cabin heat outlet in firewall. Drillet out two of the platenut mounts for the master and starter relays. Fabricated connecting straps for master and starter relays and placed combined unit onto firewall to mark remaining holes.Positioned gascolator support bracket and drilled mounting holes into fuselage. Primed and painted gascolator support bracket and battery box and components. Ready to mount these!