So I replaced the switch assembly cause it was easier to do that for me. The front brake switch was bad. I can't find anything wrong with wiring anywhere. Is there some kind of relay I'm missing or a turn signal module somewhere?Are the turn signals on both sides not working or just one? Look at the responses above from this old post.
Start by checking the wiring one at a time. Look under the fender to see if any wiring has rubbed raw.
Also, stop replacing parts until you diagnose the issue.