I tried a couple sets of USB wireless turn signals. All they did for me was convince me to hard-wire. Is it ON, or OFF, is the battery dead, are they working, more grief than safety.
I wired my fatbike with mini-bullets and a DIY headlight, using a 48V-12V converter.
Drivers respond to lights.
Make sure you mount your front flashers where you can see w/o having to twist!
And add brake lights! Gotta have them.
Riding THAT in the streets convinced me I need it on all my bikes.
Just finishing up a full hardwire set for my motorized bike. This time a RoadShock ATV light as a front headlight, and using a 6000mAh li-ion batt. I’ll post about it of course, maybe later today, still mounting a voltage display.
If the range is good (I.e 3 hrs of normal riding) I may do my fatbike lights adding a battery.