Flasher in the fuse box definitely is what I would try first, I doubt it would be the switch in the steering column because that switch operates the signals and flashers all in the same mechanism. I would think if that switch is bad, all 3 functions would have stopped working.
The headlights are LED, but all side markers are stock.
Everything worked fine until last week during a drive I noticed no clicking noise and no light on the dash display when engaging the turn signal stalk either direction. None of the side lamps illuminate.
I was under the dash a month ago tracking down a short between the fuse box and blower motor control.
The only other abnormality is that the stalk has always required more than normal force to activate the turn signals. that hasn’t changed, and the stalk still clicks and stays in place when I try to activate the signals.