What could it be a possible hazard flasher or the side turn signal wiring

The light blinks even if the switch is in the off position - and you've replaced the switch? There's a test procedure that eliminates variables and focuses on the BCM - body control module. You'll need to have proper testing performed to determine what's going on. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops