I had to add signals to most of my bikes do to way increased distracted drivers/traffic that no one knows including the police what a hand signal is anymore,
Cateye signals with 8w bulbs are good enough to be seen, I especially like the black box ones that beep when turned on and I like ones with rectangle lenses the best,
They are very easy to wire on a puch 6 wire system one wire to yellow wire under light switch, all the signal lights ground to frame, I like to chargeable type, they make the battery box type that take D batteries but they’re not so bright and if you leave them on the batteries go dead quick,
I’ve normally got real nice shape ones almost nos for about $40-50 shipped and just needed to replace the cells, I don’t need more now but I would have probably paid $80 shipped for clean nos set,
But 190$ No way