From
@67Dart273
HOW DOES the hazard flashers work?
The hazard flasher always gets hot power. That power goes to one terminal of the switch you showed. That leaves three terminals. One other goes to the left turn lamp wire, one other goes to the right turn lamp wire, and this leaves the last switch terminal. THAT terminal goes to the TS switch on the same terminal as the brake light switched power.
How does this work? With the hazard switch OFF, all 4 terminals are open, nothing is made to anything.
With the hazard switch on, ALL FOUR terminals are jumpered together. This causes hazard flasher power to route to both front lamps, and to the brake light switch line. With the TS switch centered, the TS switch then routes that hazard flasher power to the two rear brake lights.