Tonight I got started on the ELT mount. I’m going with the 406MHz unit from Artex, and mounting in the regular location. The unit ships with a mount plate that fits the hole pattern on the aft deck. The only thing I need to do is wire up the harness, mount the buzzer (an audio alarm that sounds when it activates), and it’s good to go.
I made a mount bracket for the buzzer, and ordered some #8 screws and associated washers and nuts to mount the ELT tray.
I also installed the panel ground pigtail using an AN5 bolt.