I have this one installed under my seat: https://www.amazon.com/dp/B075PYDN5V/ref=cm_sw_r_awdo_navT_a_5MZQXR72F9PV66JT6Y22 And so far it’s working well! The instructions are a little complicated, as some of the word choices don’t quite make sense lol. But there are pictures! I feel a lot safer with turn signals on my bike now