When I turn the key to start my truck there is nothing. Battery is fully charged and cables are clean. Have plenty of juice for everything else. There is no click or anything. At the same time when I lower my steering wheel, my blinkers won't work. Could this all be from the ignition switch on the steering column under the dash?

 

sounds like an electric problem somewhere, try to load test the battery, I have had so many experiences with batteries where they are full, but one of the cells is bad, so under a load, its only putting out half of the volts, but on a volt meter, its looks like everything is fine. And batteries don't "deteriorate" they go bad in a snap of a finger, one min your car will start fine, next time you go to start it, nothing, so if you have starting problems, always always always check the batter and cables first.