whitehead

got a 06 supercrew lariat 4x4 5.4. my dad just bought a new 5th wheel camper and he is wanting me to put the rails for the hitch in the bed of my truck. (we race and he has to pull the hauler with his truck). we were talking about me needing trailer brakes. my question is... does my truck come from the factory with trailer brakes already wired into the light pigtail at the bumper or will i need to get a seperate box to go under my dash.