We installed an Aquatic AV Ultra Saddlebag 6×9-inch Speaker Kit for 2014-2021 Harley-Davidson baggers. Though it originally looked like a daunting task, we actually made quick work of it.
https://www.youtube.com/watch?v=RSJvARFm3N0&t=1s
Included in the kit are two Ultra 6×9-inch speakers, grills, cutout templates, mounting plates, speaker wire/RGB extensions, and mounting hardware. See it for yourself here.

We also employed the combination of Aquatic’s RGB illumination controller and a downloaded smartphone app which controls the colors and illumination brightness.

Stay tuned as well will be installing these on a bike in an upcoming video soon.