Winnebago Hazard Flasher

There are 4 relays under the dash panel. When the turn signals are on, The relay on the far right of the four click like a regular turn signal flasher. I have no information what the other 3 relays are for. I do know that to work the four way, you push down the button on top of the steering column. I currently have a Ford 1 Ton 4x4 pick-up. On that truck, it uses regular flashers. Once again, this is on a F53 chassis.