Ford Bronco Electrical Shut Down

I Have A Starting Issue With My Bronco. Thought It Was A Solenoid Or The Starter Itself But After Replacing Them Both I Still Have The Same...

I Was Going Down The Hi-way And It Was Like Flipping A Switch, The Truck Shut Down. It Picked Back Up Again And I Went On To The Store....

No Electrical Power To Anything From Battery. It Won't Turn Over, No Lights, I Can Jump Solenoid To Turn Over, But Will Not Fire.