It might be the switch itself.
Should be a panel behind the pedals. Fuses and relays are in there.
You mentioned relays and wires, but did you check fuses? Fuses or grounds or the wires could still be bad. You have to measure the voltages dropped across them. Good luck.
try checking flashers and fuses, the check multi-function switch on steering column
All fuses and relays are in the underhood fuse box.All fuses and relays are in the underhood fuse box.
Could be the control stick for the blinkers. If the lights work, try replacing the stick or checking out the signal path for that blinker
All fuses and relays are under the hood, next to the battery.All fuses and relays are under the hood, next to the battery.
Probably
Make sure the bulbs are good.
Presumably if both stopped working at the same time the bulbs are okay, but worth checking. The fuses might be fine but the actual connection between wires might be loose/disconnected.
Main fuses and relays are in PD box next to battery. Interior fuses are in a box under dash, left side of steering column.
Check fuses
Check the drivers manual, fuses and relays are listed in there.