2002 F-250 Turn signal/hazard problem

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A couple of weeks ago I had a relay buzzing and vibrating under the dash. I replaced the relay and everything worked fine. Today, my turn signals/hazzards are inoperable. They have power, light up, but don't flash. I was told the turn signal multi switch was a common problem so I purchased and installed one. And the problem persists. I checked all fuses under the dash, and located 2 boxes of relays under the hood by the drivers side firewall. All seem normal. Also an ABS light came on today.

I am unable to locate an actual power distribution box under the hood; and believe it's all under the dash. Is that correct? Could this be a ground problem? I am lost and would appreciate any suggestions.

Locations of any other relays and fuses I may have overlooked?

Thanks!

 

Blinker Fluid???