Bought the Stebel Nautilus Compact Mini Air Horn, and the Denali (SoundBomb) harness/mounting kit (plus their mounting bracket, when I first bought my 2018 RT (Wethead) and was exploring options. That was the path others reported taking. However, I also recall for RT's with the alarm system (and...
SEE IMPORTANT NOTE BELOW, RE: HORN BODY POSITION!
I did not see a specific thread on this in my searching, so I thought I'd post some pics (I've also shared these on the R12/1250RS rswasserboxer forum).
After hearing the pathetic horn on my 2023 RS, I knew it would be completely ineffective...