I downloaded my DLCs mid-game, then heard that I had to restart the game to make the DLCs work, but nothing is working. I have been wandering the Wastes for hours with no radio signal popping up on my screen. I am using the X-box 360 console and they never work. Please reply back on how I can fix these problems.

Ahhh had to squint a little bit.Try uninstalling them, then downloading them again. If that doesn't work, try restarting the game and seeing if they pop-up after you exit v101.