2018 JKU. Yes, my tweeters are separate as well. I actually found a video that helped me. Different set up on the sound bar but same speakers and adapters as what I have: https://www.youtube.com/watch?v=fbuLXd1BWy0
Turns out I didn't have any hardware to bolt the speakers to the adapters. Nothing loose in my toolbox would fit, so off to the hardware store to grab 8 nuts, bolts and washers to attach the speakers to the adapters and I should be good.
