Your TV 2010 F250 is just like mine from a brake controller standpoint. With your reailer hitched, set the brake gain to about 5.5 then squeeze the two paddles below the gain adjust +/- buttons, with the tranny in "D" let the TV start to roll then squeeze the paddles together, you should feel the trailer brakes engage. If your TV does not come to a stop, increase the gain until it does. If your brakes do not engage, check the pin assignments for your trailer connector with that in the truck owner manual. You might check the brake pin assignment in the truck bed against the one on the bumper connector.
Mike, Sheila & Toppi our Fur Kid
2013 Cedar Creek 36CKTS/MorRyde IS/Kodiak Disc + bells-n-whistles
2013 Ford F350 Lariat/CC/DRW/Aux Fuel/Curt 20K
from Spring, TX , FROG, CCRVC, CCRVOC & Escapees members